APPENDIX A
HELICOPTER
DOOR GUNNERY
This appendix contains the
tactics, techniques, and procedures required for training and employing door
gunners for utility and cargo helicopters.
Section
I. Door Gunnery Training Strategy
A-1. DOOR GUNNERY OVERVIEW
MISSION. Utility and cargo helicopter
units should conduct annual live-fire door gunnery qualification according to
this appendix on range facilities where target hits can be objectively scored.
a. Door gunners on utility and cargo
helicopters are concerned with threats to the helicopter and crew on board,
whether the helicopter is in the air or on the ground. Door gunners must be able to acquire and
engage a wide variety of targets from many different flight profiles. Evaluation of door gunners includes a time
standard to acquire, engage, and hit the target.
b. Door gunners are normally helicopter crew
chiefs or repairmen. They may also be
soldiers from within or outside the unit.
Crew coordination is critical between the door gunners and the
helicopter's pilots. The door gunners
and pilots maintain communication and work as a team to safety operate the
aircraft, and to acquire and engage targets as required by the tactical
situation.
c. The door gunner's primary weapon is the
7.62mm M60D machine gun. The M60D is a
direct fire weapon system. The
configuration of the M60D is similar for all cargo and utility helicopters and
differs mainly in the helicopter gun mount and auxiliary equipment.
A-2. DOOR GUNNER DUTIES
a. Door gunners provide direct fire as
protection for the aircraft and crew.
To effectively employ their weapon, door gunners must:
• Thoroughly understand weapon system's
functional characteristics and operation, as well as its capabilities and
limitations.
• Have a thorough knowledge of tactical
helicopter employment.
• Be prepared to act independently, based on
the threat, and engage targets without a specific command from the pilot or
copilot.
• Act as observers to assist the pilot and
copilot in "seeing the environment" in which the aircraft is operating, either in training or
combat.
b. The door gunner will perform the
inspections of their weapons and weapon subsystem(s) on the aircraft unless
specified otherwise by unit SOP or directives.
(1) The door gunner will perform operator
level maintenance on the aircraft weapon system. The door gunner is responsible for ensuring that the correct
type and amount of clean and serviceable ammunition is on board the aircraft
for the mission.
(2) The door gunner will normally assist in
the daily inspection, preflight, postflight and other maintenance operations
involved with the aircraft. Additional
duties and/or aviation specific duties required of the door gunner (not crew
chief) should be specified by the unit SOP.
c. Door gunners must act as integral
crewmembers to help the pilot and copilot operate the aircraft safely and
effectively within the mission envelope.
(1) During flight and ground operations, door
gunners will maintain a watch for hazards and obstructions to flight. These obstructions may vary from high
tension wires and other aircraft along the flight path to obstacles such as
tree stumps in the landing zone or dunnage in the FARP.
(2) Reporting potential or actual targets to
the pilot/copilot is a specified task of the door gunner. From the gunner’s side of the aircraft, the
primary observation sector is normally 60 degrees off the nose of the
helicopter all the way to the rear.
(3) During both combat operations and
training, door gunners must maintain situational awareness. They must know the location of friendly
troops, the location of other aircraft in their formation (including escorting
attack helicopters), and the classification and location of the target(s) to
be engaged. A door gunner may also be
required to mark a ground location with smoke grenades or tracers.
(4) The unit SOP should have procedures for
crews to follow during an emergency landing.
The door gunners must know the procedures for removing weapons, electronic
equipment (radios, COMSEC devices), or other sensitive equipment or items
(such as maps and SOIs) from the helicopter.
The gunner must know how to destroy or assist in the destruction of
sensitive equipment, if necessary, to prevent capture.
A-3. DOOR GUNNER TRAINING
PROGRAM
This program is progressive
and has training gates similar to the gates found in the attack helicopter
qualification program. The purpose of
this training program is to give the door gunner the skills necessary to perform
door gunner duties in a crew. The
training program consists of 10 training tables. These tables progress in numerical order from individual
marksmanship training to multiship live-fire.
The training tables support the commander's METL and the unit's MTP. The door gunnery training tables are as
follows:
a. Basic Gunnery. Tables I-IV are the initial
M60 ground qualification.
• Table I - 10 meter practice fire.
• Table II - 10 meter record fire.
• Table III - Transition practice fire.
• Table IV - Transition record fire.
(1) Tables I-IV qualify the door
gunner on the ground M60 machine gun according to FM 23-67. The philosophy of ground qualification is to
instill confidence in the door gunner and also in the soldiers transported in
the helicopter. Soldiers flown into
combat by the assault or cargo helicopter crew will know that the door gunners
are not only qualified to the Army standard on the ground M60, but are also
trained on the M60D. Door gunners will
be capable of placing direct fire on
threats while in the air or from ground defensive positions as dictated by the
tactical situation.
(2) Before firing the basic tables, the door
gunner candidate will receive premarksmanship instruction on the M60 machine
gun. Figure A-1 shows the minimum
instruction required for Tables I-IV.
(3) The ground M60 tasks in FM 23-67 require that the weapon be
fired from both the tripod and bipod.
If standard M60s cannot be used during Tables I-IV, the tasks that
normally require firing the weapon from a tripod must be modified for the M60D
with bipod firing substituted for tripod firing.
(4) If standard M60s are not available in the
unit, the unit has the option to arrange with another unit in the battalion/squadron
or brigade to use their M60s for initial weapons training. "Piggy backing" door gunners on
ranges with other units that conduct M60 machine gun training is also recommended.
(5) When a new door gunner
candidate is designated, the individual must complete ground qualification
according to FM 23-67 prior to progressing to air qualification. Ground qualification is a training
gate. The door gunner must ground
qualify only once, providing the aircraft qualification, i.e. (Tables V-VIII),
is completed within 12 months. If the
door gunner candidate does not complete aircraft qualification, i.e., Tables
V-VIII, within 12 months of ground qualification, the individual must refire
Tables I-IV prior to progressing to the aircraft qualification. Once the individual completes aircraft
qualification, there is no requirement to requalify on Tables I-IV.
(6) Units may conduct live-fire training from
helicopter cabin mock-up during basic gunnery.
Many units build helicopter cabin mock-up for training their door
gunners. They approximate the dimensions
of the immediate area of door gunner's station in the helicopter's cabin and
allow the door gunner trainee to fire his weapon using a sight picture very
similar to that used in the actual aircraft.
These "simulators" range in complexity from simple 20-foot
towers to those mounted on 2 1/2-ton trucks, simulating aircraft movement
during engagements. While there is
currently no standard design, units may develop their own design for enhancing
door gunnery training.
b. Intermediate Gunnery.
(1) Table V. Table V is the Door Gunnery
Skills Training and Test table. During
this table, the door gunner will learn skills needed to execute his
duties. The commander will use this
table for assessing the readiness of the door gunners prior to Table VI.
(a) Training
program.
• Table V program contains two parts--training
and assessment. The training program
prepares the door gunner for Intermediate live-fire tables. To fill both door gunner positions, the
commander may designate a noncrew chief.
If this is the case, Table V training must include instruction on the
basics of the aircraft.
• At a minimum, Table V will include academic
instruction on the subjects outlined in Figure A-2 and a Door Gunnery Skills
Test of at least 50 questions. Subject
areas for the questions will be selected by the commander, but will include
questions on the academic instruction with emphasis on weapon function,
ballistics, target acquisition, and aircraft procedures. Door gunners will score at least 70 percent
on the DGST. Door gunners must complete
the DGST within 180 days prior to starting intermediate gunnery.
(b) Aircraft orientation is applicable only to
door gunners who are not crew chiefs or who are not familiar with the unit
aircraft.
(c) This program is intended to be ongoing because tactical subjects are
included in the training program. A
good gunnery program does not start just prior to the qualification range.
(2) Table VI. If the door gunner
successfully completes Table V to standard, he will progress to Table VI. Table VI is the initial aircraft live-fire
table. During this table, the door
gunner will fire the M60D from the aircraft for the first time.
(a) The table consists of 5-day tasks, of which one is an NBC task.
(b) The tables verify
the function of the door gunner's assigned weapons.
|
Training Objective: To provide initial M60 qualification for
personnel assigned to door gunnery positions. |
||
|
SUBJECT |
DESCRIPTION |
REFERENCE |
|
Operation and Function of the M60 |
A class to provide the basic knowledge
of how the components of the M60 function during operation |
FM 23-67, TM 9-1005-224-10 |
|
Assembly, Disassembly, and Nomenclature
of the M60 |
A demonstration and a practical exercise on the general and detailed assembly, disassembly, and
nomenclature of the M60 machine gun. |
FM 23-67, TM 9-1005-224-10 |
|
Malfunctions, Immediate Action, and
Maintenance |
A class to provide information
concerning abnormal operation, corrective action, and maintenance. |
FM 23-67, TM 9-1005-224-10 |
|
Range Estimation |
A class and practical exercise to
provide information on methods of determining the distance between gunner and
target. |
FM 23-67, FM 1-140, TM 9-1005-224-10 |
|
Fire Control/ Fire Commands |
A class to provide information on the
methods used in controlling and delivering fires. |
FM 23-67 |
|
M60
Machine Gun Practice and Record Fire |
A
briefing on the conduct and standards of Tables I-IV. |
Unit
SOP, Range SOP, FM 23-67 |
Figure A-1. Basic weapon
qualification
|
Training Objective: Door gunner qualification |
||
|
SUBJECT |
DESCRIPTION |
REFERENCE |
|
Duties of the Door Gunner |
A class on the duties of door gunners |
Unit SOP, Appendix A, FM 1-140 |
|
Aircraft Orientation |
A class and practical exercise to
familiarize the student with the capabilities and limitations of the unit's
aircraft |
Appropriate aircraft operator's
manual |
|
Techniques of Fire and Employment |
A class on principles and techniques
of helicopter machine gun firing |
Appendix A, FM 1-140, FM 23-67 |
|
Ballistics |
A class on ballistics for spin stabilized
projectiles |
Chap 4, FM 1-140, Chap 7, FM 23-67 |
|
Armament System Introduction |
A class and practical exercise on the
M60D to include safety procedures, and operator maintenance |
TM 9-1005-262-13 |
|
Aviation Battlefield Survivability |
A class to provide an overview of
Threat defense systems that aircrews may face |
Bde/Bn S2 brief |
|
Visual Search and Target Detection |
A class on techniques of visual
search, to include limitations and procedures of target detection |
FM 1-116, Chapter 6, FM 1-140 |
|
Crew Member Emergency Procedures |
A class and demonstration of duties
and actions taken by the door gunner during in-flight and forced landing
emergencies |
Aircraft operator's manual and unit
SOP |
|
Night Gunnery |
A class on techniques and procedures
of night firing |
TC 1-204, Range SOP |
|
First Aid Training |
A class on principles of first aid |
FM 1-301, FM 21-11 |
|
Protective Mask |
A class and practical exercise on the
description, characteristics, and procedures for wearing the protective mask
during engagements |
TM 3-4240-280-10 |
|
Door
Gunnery Qualification |
A
briefing on the conduct and standards of Tables VI-VIII. |
Range SOP, TM 9-1005-224-10, TM
9-1005-262-13 |
Figure A-2. Table V, intermediate
gunnery training
(c) The NBC task is fired in mask and gloves only. This task has no requirement for a MOPP
suit.
(3) Table VII. Table VII is a day/night
practice table for Table VIII. The
table consists of 8 tasks (5 day/3 night) of which one is an NBC task. The table is completed from the aircraft in
a variety of flight modes.
(4) Table VIII. Table VIII is the
qualification table. The table consists
of the same number of tasks as Table VII.
Table VIII contains both day and night tasks, and is the gate for
advanced table gunnery. Gunners who do not qualify on Table VIII will not progress to advanced table training.
c. Advanced Gunnery.
(1) Table IX. Table IX is multiship gunnery
using MILES/AGES and blanks with the M60D.
This table will give the door gunners that successfully completed
intermediate gunnery qualification the first opportunity to participate in
training with more than one aircraft.
(2) Table X. Table X is multiship live-fire gunnery. The intent of Table X is for units to fire the table at CTCs or
large range complexes. The large
surface danger zone of two M60D prohibits multidoor gunner gunnery at most
installations. The maximum recommended
number of aircraft participating in Table X gunnery is five.
A-4. UNIT TRAINING STRATEGY
a. Commanders will designate a door gunnery unit trainer
in writing. The door gunnery unit
trainer should be a senior noncommissioned officer with considerable
experience in door gunnery. The UT is
the commander's point of contact and subject matter expert on door
gunnery. The UT is responsible for
training new personnel and conducting sustainment training for personnel
already qualified. The UT will--
• Be a qualified door gunner.
• Organize all training in coordination with
the S3.
• Supervise the preparation and execution of
all instruction.
• Supervise initial qualification and annual
qualification from the aircraft.
• Evaluate qualification tables.
• Maintain qualification records on all door
gunners in accordance with
Chapter 2, FM 1-140.
The commander may designate
assistant UTs. The UT will work closely
with the commander and the S3 to administer and evaluate the training program for unit door
gunners. The intent is that the
UT(s) be the best qualified personnel to conduct door gunnery training,
however, it is not implied, nor is it a requirement, that the UT(s) must be a
"Master Gunner" as described in paragraph 1-5 of this Field
Manual.
b. The commander, assisted by the UT, will complete a unit training
assessment according to Chapter 2 of this manual.
c. Once the assessment is complete, the
commander will outline his objectives for the door gunnery training
program. His guidance must include the
desired training end-state for the program.
For example, "two qualified door gunners per UH-60 in A
Company." This requirement is
based in large part on available resources.
d. Once the objectives for the gunnery are
clear, the S3 and UT will begin planning the conduct of the training
program. It is recommended that door
gunner training be incorporated into the unit training plan as a continual
program.
e. Door gunnery training should be
incorporated into a written program with clear objectives and training goals
throughout the training year. Door
gunnery subjects are relevant for "Sergeants’ Time" or "Prime
Time" training programs common to most active Army units.
f. The unit commander will designate door gunners in writing. The commander will accomplish this with a
memorandum similar to standard additional duty appointment orders.
g. The door gunnery section of this appendix
defines the requirements for conducting and evaluating live-fire door gunnery
tables. Units that have night missions
as part of their METL will complete the night tasks. The door gunners will use NVGs while firing from the aircraft.
h. Once the intermediate gunnery is complete,
the UT will document the training and maintain records for a minimum of 36 months, according to
Chapter 2, FM 1-140.
NOTE: Door gunners should be allowed to fire from
both sides of the aircraft for familiarization if resources are available. However, range control personnel have specific instructions for door
gunnery which vary from installation to installation. Firing may only be allowed from the right side of the aircraft
only, etc. Check with your local range
control personnel to be sure of their local restrictions.
A-5. CREW COORDINATION
Now, more than in the recent past, high
personnel turnover and OPTEMPO make crew coordination more crucial for door
gunnery. Crew chiefs stay
with their aircraft and
they are an integral part of the crew.
The crews and crew chiefs should maintain a habitual flying
relationship. Because of personnel
turnover and maintenance, the pilot and copilot may not always fly the same aircraft or
fly with the same crew chief. Training must focus on standardization
of cockpit communication and procedures.
A-6. WEAPONS CONTROL AND
FIRE COMMANDS
Before departure on a
mission, the pilot in command will brief the crew on the situation and
mission. The briefing is mission
dependent, but will normally include the friendly situation, enemy situation,
rules of engagement, possible target areas, marking of targets, mission
specific fire commands, and other mission specific information. The unit SOP or parent unit operating procedures or directives should
dictate when loading ammunition in the aircraft weapons systems occurs.
a. Standard Weapon Control Measures.
(1) The following are the standard weapon
control measures/terms:
• Weapons hold. The door
gunner's weapons will remain in a stowed position. Enemy contact is not likely or is an administrative measure by
the PC.
• Weapons tight. The door
gunner's weapon would be placed in a position to fire. However, firing would only be executed on
order of the PC. Enemy contact is possible.
• Weapons free. Door
gunners make the decision to fire.
Based on the mission brief where enemy contact is expected.
(2) The door gunner will acknowledge the
weapon control status to the PC. If the
weapon status is in other than "hold", the gunner will announce that
the weapon is in a condition and position to fire. The door gunner will report "GUN READY."
b. Crew Weapon Sequence. A standard
sequence for engagements is important (See Chapter 6). The following is the standard weapon
sequence for utility/cargo crews. The
intent of the sequence is for the sequence to follow a logical progression for the crewmember. If the pilot, copilot, or other crewmembers
acquire a target, the observing crewmember will alert the other crewmembers. The standard weapon sequence is:
• Which
crewmember should know? (Left/Right Gunner, Pilot.)
• What
is it? (Target, Bandit.)
• Where
is it? (Clock position and range.)
• Who
is it? (Target type.)
• Action.
(What are you doing or what should
the other crew members be doing?)
(1) The following is a typical weapon
sequence:
"Left Gunner, target, eleven o'clock, six hundred meters, soldiers
in tree line, engage."
The right side door gunner,
upon acquisition, would announce:
"Tally, firing."
(2) Chapter 6 lists standard phrases for crew
communication. The following are
phrases specifically for door gunnery.
• Open fire. Instructs the gunners to start firing at an
obvious threat to the aircraft. May
also apply to a specific gunner. For
example, "right gunner, open fire."
• Cease fire. Instructs the gunners to stop firing. May also apply to a specific gunner. For example, "right gunner, cease
fire."
• Ready. Indicates guns are ready to fire.
• Right
gun/left gun jam. Indicates a gun
is jammed and cannot fire. Right/left
indicates which side the gun is on.
• Right
gun/left gun out. Indicates the
door gunner is out of ammunition.
Right/left indicates which side the gun is on.
NOTE: "Back gunner" or "back
gun" indicates the rear door gunner and will be used on CH-47s with the
third door gunner.
A-7. SAFETY CONSIDERATIONS
a. Flight Equipment. Door
gunners, during flight operations, will wear ALSE (such as flight helmet, Nomex
flight suit, gloves) and other pieces of equipment specified by regulations
and/or directives. The commander may
direct that additional hearing protection be worn due to the increased sound
pressure levels generated during weapons firing. For increased eye protection, lower helmet visors during any
firing operations.
b. Seat Belt/Safety Harness. The door
gunner should remain strapped in his seat during normal aircraft
operations. A safety harness
("Monkey strap") will permit additional movement inside the aircraft,
particularly during engagements.
c. Ejected Brass. Spent brass that collects on the floor of the aircraft can make
footing hazardous. Ejected brass from a
firing weapon can be carried by the aircraft's slipstream into the aircraft,
causing damage. Ejection control bags
("Brass catchers") control spent brass and should be used.
d. Barrel Change. The airflow around a
helicopter in flight helps to cool the machine gun barrel. However, a barrel change may still be
necessary, depending on the rate of fire.
A barrel change is normally a team effort (gunner and assistant gunner)
on a standard M60. However, on board an
aircraft a barrel change will more than likely be performed by the individual
door gunner. Although barrel removal
and replacement is relatively simple, safety dictates that additional emphasis
be placed on standardization of the procedure. The unit SOP should specify when, where, and how an extra barrel
will be carried and secured and how to accomplish barrel changes. FM 23-67 recommends barrel change based on
the following rates of fire:
• Sustained
(100 rounds per minute): Change
barrel every 10 minutes.
• Rapid (200 rounds per
minute): Change barrel every 2 minutes.
• Cyclic (550 rounds per
minute): Change barrel every minute.
A-8. AMMUNITION
DA Pamphlet 350-38
identifies ammunition to train one door gunner per aircraft annually. This ammunition is an important
consideration and will be an important factor when determining the number of
door gunners to train. Chapter 7, DA
Pamphlet 350-38 states, "Current authorizations fill one gunner position
per aircraft. Total rounds per aircraft
will double when second gunner position is authorized." Ammunition for the M60D is standard 7.62mm
mix. Units may have success drawing
additional ammunition. However, the
initial planning must be for the DA Pamphlet 350-38 allocation. Figure A-3 shows the ammunition allocation
per table.
A-9. GUNNERY TABLES
Figures A-4 through A-8
(gunnery tables VI, VII and VIII) provide the framework for the door gunnery
training program. Commanders may vary
the engagement sequences, conditions, and target arrays within the tables to
meet mission training requirements or to fit resource constraints such as
range layout. Modified tables must be
no less demanding than those in the manual, and such modifications will be
temporary. Commanders must work
continuously with installation or regional range authorities to upgrade and
improve gunnery ranges. Commanders may
allocate additional ammunition to Table VI for weapons calibration, if
available.
a. Tables VII and VIII are
based on eight tasks. Five tasks must
be qualified, and a minimum of 350 points must be scored on Table VIII for the
door gunner to be qualified. You may
use the score sheet in Chapter 2 to help score the engagements.
|
GUNNERY
TABLES |
# ROUNDS TRC A / C |
|
|
I |
10 meter practice fire |
117
/ 117 ball |
|
II |
10 meter record fire |
119
/ 119 ball |
|
III |
Transition range practice fire |
182
/ 182 mix |
|
IV |
Transition range record fire |
154
/ 154 mix |
|
V |
Door gunner training and assessment |
|
|
VI |
Aircraft transition/weapons
calibration |
150
/ 150 mix |
|
VII |
Aircraft practice |
240
/ 240 mix |
|
VIII |
Aircraft qualification |
240
/ 240 mix |
|
IX |
Section/platoon training (MILES) |
200
/ 200 blank |
|
X |
Section/platoon training |
200
/ 0 mix |
|
TOTALS: |
7.62mm Ball: 236/236 7.62mm Mix: 1,166 (TRC A) 966 (TRC
C) 7.62mm Blank: 200/200 |
|
|
NOTES:
1.
Refer to DA Pamphlet 350-38 for current ammunition authorizations. 2.
The unit METL and MTP determine whether night training and
qualification tables are conducted.
Night door gunnery is designed for door gunners and crew to use NVGs. |
||
Figure
A-3. Annual ammunition allocation per
gunnery table
TASK |
CONDITION |
STANDARD |
||||
|
NO
DESCRIPTION |
MODE RANGE TARGET (METERS) |
TARGET AMMO EFFECT |
||||
|
1 |
Engage
stationary target, NBC |
Ground |
300-500 |
Troops |
1 Hit |
30 |
|
2 |
Engage stationary
target |
Take off |
300-500 |
Troops |
1 Hit |
30 |
|
3 |
Engage
moving target |
Hover |
400-600 |
Vehicle |
3 Hits |
30 |
|
4 |
Engage
moving target |
Moving |
400-500 |
Vehicle |
3 Hits |
30 |
|
5 |
Engage stationary target |
Running |
800-300 |
Vehicle |
3
Hits |
30 |
Figure A-4. Table VI. Door gunner
transition course
|
TASK |
CONDITION |
STANDARD |
||||
|
NO DESCRIPTION |
MODE RANGE TARGET (METERS) |
TARGET AMMO EFFECT |
||||
|
1 |
Engage stationary
target, NBC |
Ground |
300-500 |
Troops |
1 Hit |
30 |
|
2 |
Engage
stationary target |
Take off |
300-500 |
Troops |
1 Hit |
30 |
|
3 |
Engage
moving target |
Hover |
400-600 |
Vehicle |
3 Hits |
30 |
|
4 |
Engage
stationary target |
Moving |
400-500 |
Vehicle |
3 Hits |
30 |
|
5 |
Engage stationary target |
Running |
800-300 |
Vehicle |
3 Hits |
30 |
Figure A-5. Table VII. Day door gunner practice course
|
TASK |
CONDITION |
STANDARD |
||||
|
NO
DESCRIPTION |
MODE RANGE TARGET (METERS) |
TARGET AMMO EFFECT |
||||
|
1 |
Engage
stationary target |
Ground |
250-350 |
Troops |
1 Hit |
30 |
|
2 |
Engage
stationary target |
Hover |
400-500 |
Vehicle |
3 Hits |
30 |
|
3 |
Engage stationary target |
Moving |
400-600 |
Vehicle |
3 Hits |
30 |
Figure A-6. Table VII. Night door gunner practice course
|
TASK |
CONDITION |
STANDARD |
||||
|
NO DESCRIPTION |
MODE RANGE TARGET (METERS) |
TARGET AMMO EFFECT |
||||
|
1 |
Engage stationary
target, NBC |
Ground |
300-500 |
Troops |
1 Hit |
30 |
|
2 |
Engage stationary
target |
Take off |
300-500 |
Troops |
1 Hit |
30 |
|
3 |
Engage
moving target |
Hover |
400-600 |
Vehicle |
3 Hits |
30 |
|
4 |
Engage stationary
target |
Moving |
400-500 |
Vehicle |
3 Hits |
30 |
|
5 |
Engage stationary target |
Running |
800-300 |
Vehicle |
3
Hits |
30 |
Figure A-7. Table VIII. Day door gunner qualification course
|
TASK |
CONDITION |
STANDARD |
||||
|
NO DESCRIPTION |
MODE RANGE TARGET (METERS) |
TARGET AMMO EFFECT |
||||
|
1 |
Engage stationary
target |
Ground |
250-350 |
Troops |
1 Hit |
30 |
|
2 |
Engage stationary
target |
Hover |
400-500 |
Vehicle |
3 Hits |
30 |
|
3 |
Engage stationary target |
Moving |
400-600 |
Vehicle |
3
Hits |
30 |
Figure A-8. Table VIII. Night door gunner
qualification course
b. Engagement Time Standards. Using the
point calculation table below, scorers can determine a numerical score for
each engagement. To use Table A-1:
• Time the engagement using the methods
outlined in Chapter 2 of this manual.
• Find the time of the engagement in the
"Time" column below. Read
down to the "Points" column to determine score.
• If the engagement time is exactly halfway
between two times, figure the number in between the two scores the engagement
time falls between. For example, if
the engagement time is 10.5 seconds, the score is 95 points.
• Always round down to get the score. For example, if the engagement time is 11.7
seconds, the score is 93. (Rounded down to 11.5 seconds).
|
Time |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
24 |
27 |
30 |
|
Points |
100 |
98 |
96 |
94 |
92 |
90 |
88 |
86 |
84 |
82 |
80 |
78 |
76 |
74 |
72 |
70 |
50 |
30 |
|
NOTE:
A full-size version of this point calculation table is located in
Appendix C. |
||||||||||||||||||
A-10. FIRE CONTROL
FUNDAMENTALS
Fire control is the name
given to the observations, calculations, and actions involved in firing a
weapon. Fire control is the method of
directing munitions so they will hit
the target with a minimum expenditure of ammunition.
a. Most gun systems contain the same basic
elements. The line of sight is the
direction from the gun to the target.
The line of aim is offset from the LOS by an amount determined by
the following:
• Target motion.
• Helicopter motion.
• Range to target.
• Projectile drop.
• Wind effects.
• Projectile and gun characteristics.
b. The gunner must estimate all the factors
that determine the amount of compensation required. He estimates range and lead for an initial burst and corrects for
elevation and deflection by adjusting the rounds on target. This techniques is known as applying
"burst on target". The ballistic
factors for door guns (flexible mode) are covered in Chapter 4 of this manual.
A-11. RANGE ESTIMATION
Range estimation is covered
in Chapter 6. Door gunners will normally
use the recognition method for range estimation. When the door gunner uses the recognition method, the following
factors effect the accuracy of the range estimation process.
a. Objects
seem closer when:
• Viewed from altitude.
• Looking down a straight road or railroad
track.
• Objects are in bright light.
• Looking over smooth terrain.
• Color of object contrasts sharply with
color of background.
b. Objects
seem farther away when:
• Looking from low altitude to higher
terrain.
• Looking over rough terrain.
• There is poor light or fog.
• Only a small part of the object can be
seen.
A-12. WEAPON ENGAGEMENT RANGE
a. The maximum range of the M60 machine gun
with the 7.62mm round is 3,725 meters.
Maximum range means that, with the necessary elevation applied to the
weapon with standard ball ammunition over "flat earth," the
projectile should travel 3,725 meters.
b. The maximum effective range of the
M60D is published as 1,100 meters.
However, the planning maximum effective range is 900-950 meters, based
on probabilities of hit and tracer burnout.
A-13. FIRING TECHNIQUES
a. The door gunner must understand the
challenges of firing a machine gun from a helicopter in flight. These challenges include variable airspeeds,
ranges, firing angles, and ballistics.
Some of these complexities, as compared to a ground gunner, are
explained below.
(1) The door gunner's firing platform is
normally moving; the ground gunner usually fires from a stationary platform.
(2) The door gunner normally has only his eyes
to estimate range. The ground gunner
can use range finders, maps, or known ground reference points to more easily
determine range.
(3) The door gunner is usually autonomous
regarding fire control and ammunition conservation. The ground gunner receives fire control
instructions from his section leader and ammunition conservation assistance
from the assistant gunner.
b. Range estimation is the door gunner's
first consideration when preparing to fire at a target. Door gunners must be able to estimate range
quickly and accurately and should practice range estimation throughout their
training.
c. Proper aim points for target engagement
from a moving helicopter vary with airspeed, altitude, bank angle, and rate of
turn.
(1) As a rule of thumb, the point of aim is to
the near side of the target (the side of the target closest to the firer). Aim point is, in part, due to the motion of
the aircraft and the effects of projectile drift that carry the bullet
forward.
(2) Another accepted method of initial target
engagement is to aim low when firing from the left side of the aircraft and to
aim high when firing from the right side.
Bank angles, approach angles, turns, and other aircraft motion will also
be factors in aiming the weapon and placing effective fire on a target (see
Figure A-9).
Figure A-9. Aiming points
A-14. FIRE ADJUSTMENT
a. Observation and adjustment of fire must be
continuous throughout the engagement.
Initial delivery of long bursts will normally help the gunner adjust the
subsequent bursts.
b. Gunners must try to anticipate a target’s movement. Personnel on the ground and vehicles will tend to move when fired
upon. Gunners need to quickly react to
that movement by shifting fire in the direction of the movement.
.
c. A four to one (ball to tracer) ratio of
ammunition will normally provide enough tracers for positive adjustment of
fire. At engagement ranges beyond
tracer burnout, other factors must be considered. Tracer burnout of 7.62 mm ammunition is approximately 900
meters. At ranges beyond 900 meters,
the firer could observe tracer burnout and believe that he aimed low when, in
reality, the projectile continued along its trajectory and struck beyond the
target.
d. The M60D machine gun barrel has a tendency to
climb when firing. Caution must be
exercised to prevent this tendency. A
climbing muzzle could reach an angle where other aircraft, or even the main
rotor blades of the firing aircraft, could be hit.
e. When firing with the M60D, placing the
horizontal cross hair and front sight blade on line with the target corrects
for bullet drop at ranges up to 750 meters.
Gunners must aim the
weapon higher at ranges beyond 750 meters.
f. When correcting for lead effect, the
gunner must align the target, front sight blade, and the approximate point on
the horizontal cross hair. This
alignment is only an estimated point of aim since aircraft speed and/or movement
will make accurate aiming difficult. When firing from the right side of the helicopter, the gunner
will use the right hand section of the sighting rings according to target
location and aircraft speed. When
firing from the left side of the helicopter the gunner will use the left side
of the sighting rings. Refer to Figures
A-10 and A-11 for more information on the lead effect.
A-15. OVERVIEW
a. This section describes the tactics,
techniques and procedures for planning and conducting multihelicopter door
gunnery operations. It is designed for
use in establishing M60D multihelicopter door gunnery training programs in
aviation units assigned utility or cargo helicopters.
b. This section is applicable to commanders,
platoon leaders, crew members, and nonrated crew members of aviation units who
conduct air movement and air assault missions.
It is not intended to replace aviation unit door gunnery training
manuals or SOPs. It provides planning
and training requirements for aerial door gunnery that are not in doctrinal
publications or ATMs.
c. The TTP applies to the UH-1, UH-60, and
CH-47 helicopters. However, these
principles are applicable to all aviation units that conduct multihelicopter
air movement and air assault operations.
A-16. MULTIHELICOPTER DOOR
GUNNERY
Multihelicopter door gunnery
consists of the techniques used to acquire and engage targets from helicopters
flying in formation at terrain flight altitudes.
a. Aircrews and door gunners in the formation
must use effective crew coordination procedures to visually acquire, identify
and engage targets. Both aircraft and
passengers are vulnerable to attack during air movement operations and throughout
all phases of air assault operations.
Therefore, it is imperative that door gunners respond by delivering
direct and indirect fires on these targets.
This section discusses crew coordination procedures, gunner employment,
and firing techniques to be used during multihelicopter operations.
b. Prerequisites. Before conducting multihelicopter door gunnery, the aircrews and
door gunners must be qualified in the techniques and skills of basic door
gunnery and they must complete crew qualification, Table VIII, according to
this appendix.
Figure A-10. Sight picture,
right side of aircraft
Figure A-11. Sight picture,
left side of aircraft
A-17. CREW COORDINATION
a. Aircrew Duties. Before departing on a mission,
the pilot-in-command must orient his crew on the situation and the
mission. This orientation will include
the friendly situation, rules of engagement, possible target areas, fire
commands, the location of emergency medical and survival equipment, and other
available information essential to mission success. Coordination between crewmembers can prove to be the
critical element in accident/incident prevention. Don’t assume others know what
you know or see what you see!
b. Coordination Between Aircraft.
Detailed procedures for communicating during live-fire (training and
combat) will be standardized and specified by the unit SOP. Crewmembers must clearly understand one
another. In addition, positive
communication between aircrews must specify commence fire and cease fire
procedures and firing azimuths of overlapping or sector fires for the
flight. For example, lead calls
formation "cease fire" upon landing in LZ. Coordination between
aircraft/aircrews can prove to be the critical element in accident/incident
prevention. Don’t assume others know what you know or see what you see!
A-18. DOOR GUNNER EMPLOYMENT
IN FORMATION
a. Sectors of Fire. A sector of
fire is an area to be covered by fire that is assigned to an individual, a
weapon, an aircraft, or a unit. Door
gunners are normally assigned two sectors of fire: a primary sector and a
secondary sector. Door gunners must know the traversing limits and the
definitions that apply when calculating sectors of fire in formation. Traversing limits are addressed in the
aircraft operator’s manual.
b. Definitions.
(1) Inboard gunner. The gunner on the inboard side of a formation is the
inboard gunner. This gunner usually has another aircraft in his field of
fire. Figures A-12 through A-16 are
examples of inboard gunner positions.
(2) Outboard gunner. The gunner on the outboard side of a
formation that does not have another aircraft in his field of fire is the
outboard gunner. Figure A-12 through
A-16 are examples of outboard gunner positions.
(3) The safety limit. The imaginary line from the
gunner's position to a point in space that is no closer than two rotor
diameters (day) and three rotor diameters (night) from any other aircraft.
(4) Permissible sector of fire. The door gunner’s permissible sector of fire is defined as the area in
which the weapon may move freely within its traversing limits minus the area in
which weapon’s fire would impact friendly troops or equipment. For safety reasons, the door gunner should not fire
any closer than a lateral distance of two rotor diameters (day safety limit)
and three rotor diameters (night safety limit) from another aircraft. The gunner will determine this distance.
The figures in this section show the approximate angles for the
sectors of fire for different aircraft when allowing for the safety limit. The permissible sectors of fire will
constantly change due to changes in position of aircraft during formation
flying.
A-19. FORMATION
CONSIDERATIONS
a. Multihelicopter door gunnery training
operations should be performed with a minimum of two aircraft and maximum of
five aircraft in formation.
b. Aircrews conducting formation flight must
do so with an extreme sense of responsibility and with constant vigilance. The employment of door gunners in formation
adds another responsibility to the entire aircrew. In addition to being concerned with separation from other
aircraft, they must concentrate on permissible sectors of fire, when firing can commence
and when it must cease. Door gunners must be constantly
vigilant to avoid mistakes which could prove fatal during the conduct of live
fire formation flight.
(1) Aerodynamic interference. Aircrews,
especially door gunners, should anticipate aerodynamic interference between
helicopters during formation flight.
Aircrews flying trailing aircraft may encounter wake turbulence if they
permit their aircraft to get below leading aircraft. Flight in the turbulent air may result in rapid attitude (pitch),
roll, and yaw changes. Power may also
have to be increased to maintain a proper position in a formation. Door gunners must be aware of the
possibility of aerodynamic interference.
(2) Aircraft separation. The
distance between helicopters or formations of helicopters can be greatly
increased to fit the tactical situation.
At higher altitude, helicopters should be positioned far enough apart to
prevent a burst of antiaircraft fire from destroying the entire flight. At terrain flight altitudes, aircraft may be
spread out to take advantage of the terrain.
Additionally, flying loose and extended formations are less fatiguing to
the pilot than flying close formations.
Door gunners must be familiar with the techniques for maintaining proper
aircraft separation. Understanding
these techniques will aid door gunners in determining their permissible
sectors of fire while in formation.
(3) Aircraft maneuvering. An aircraft is normally maneuvered with
primary reference to only one other aircraft in the formation. The constant effort required to detect any
change in altitude, airspeed, or heading of the reference aircraft precludes
watching aircraft other than the reference aircraft. If all aircraft guide correctly to their reference
aircraft, then all aircraft have adequate distance and altitude separation for
safe operation of the flight as well as
door gunner employment. In those
formations requiring a relative position to more than one aircraft (staggered trail), the
aviator must use peripheral vision to the maximum, while concentrating on his
reference aircraft. The pilots must
also keep a constant mental picture of his door gunners' permissible sectors of
fire as well as keeping track of locations of other aircraft in the
formation. Gunners will also play a
role in determining when they do and do not have permissible sectors of
fire. It is possible for a gunner on
one side of the aircraft to have a permissible sector of fire when the
gunner(s) in another position(s) does (do) not and vice versa.
(4) Maneuvers. Aircrews that will be conducting formation flight must also
be familiar with the many different maneuvers normally associated with
multihelicopter operations. They must
be aware of how those maneuvers could change the permissible sectors of fire or
in some cases restrict the gunners' fire altogether. Maneuvers they must be familiar with include:
• Formation takeoff.
• Formation turns.
• Formation changes en route.
• Rendezvous and join up.
• Tactical formation breakup.
• Formation landing.
• Night formation landing.
• Evasive actions.
The procedures for these
maneuvers are explained in TC 1-201.
The tasks, conditions and standards for some of the maneuvers,
particularly evasive maneuvers, are found in the appropriate ATM for each
aircraft.
(5) Listed below are commonly used formations
and their permissible sectors of fire.
(a) Echelon
left/right. This formation allows rapid
deployment of the flank and allows unrestricted fires by outboard gunners in
the lead and trail aircraft. It
somewhat restricts suppressive fire by inboard gunners of lead and trail
aircraft as well as the inboard and outboard gunners of other aircraft within
the formation. Figure A-12 shows
echelon left. Figure A-13 shows echelon
right.
(b) Trail. Allows rapid deployment of forces to the flank; somewhat restricts
fires by all gunners. Separation is two
rotor disks during day and three rotor disks at night. Figures A-14 and A-15 show trail formations
for day and night.
(c) Tactical
free cruise. Free cruise is a technique
that permits the wingman in a two-ship section or greater to freely maneuver in
the zone extending 45 degrees on either side and to the rear of the leader's
tail. Within the zone, the wingman may
vary vertical separation, airspeed, and distance from the leader. The distance the wingman trails the leader
varies and depends upon visibility and terrain. The wingman must maintain visual contact with the leader. However, he must exercise caution not to
overtake the leader. The flexibility of
free cruise enables the wingman to change his position behind the leader at
will without radio communication. The
wingman is able to choose his own flight path to avoid obstacles, use terrain
to the maximum advantage, or to provide fires against known or suspected enemy
positions. Free cruise is best suited for tactical situations. This formation causes continuous changes in
the permissible sectors of fire.
Depending upon aircraft position in the flight, it sometimes allows
unrestricted fires of gunners while restricting fires of other gunners within
the formation. Figure A-16 shows
tactical free cruise sectors of fire.
NOTE: Tactical free cruise is the most challenging
formation for controlling fires from door gunners. Because of the constant change involved in the formation,
employment of door gunners during free cruise requires a great deal of training
and command and control.
A-20. FIRING TECHNIQUES.
a. Fire Control Requirements. Fire
control includes all actions of the aircrews in planning, preparing and
actually applying fire on a target.
These actions include:
• The ability to select and designate
targets.
• Open fire at the instant desired.
• Adjust fire and regulate the rate of fire.
• Shift from one target to another.
• Overlap fires with other gunners.
• Cease fire.
Failure to exercise fire
control results in ineffective employment of the weapon systems and can result
in danger to friendly troops or aircraft.
It also results in an inability to engage a threatening target; loss of
surprise; premature disclosure of positions, fire on unimportant targets, loss
of time in adjusting fire, and wasted ammunition
Figure A-12. Sectors of fire,
echelon left
Figure A-13. Sectors of fire,
echelon right
Figure A-14. Trail formation,
day
Figure A-15. Trail formation,
night
Figure A-16. Tactical free
cruise
b. Target of Opportunity. The
requirement for immediate fires arises from targets of opportunity or changes
in the tactical situation. Immediate
fire targets may be acquired by any door gunner(s) in the formation. However, all immediate fires require close
coordination between other aircraft in the formation and, if the situation
dictates, with the ground commander or his fire support coordinator.
c. Target Acquisition. Targets are acquired by all
available means. Targets acquired by
the aircrews are engaged and controlled under the direction of the
pilot-in-command, pilot, air mission commander or with the ground commander to
support the ground tactical plan.
Engagement of targets acquired by other means will be according to
existing directives or policies of the supported headquarters.
(1) Target identification under natural light
conditions at night may be difficult.
The factors of METT-T and the tactical situation (such as cross-FLOT)
also apply to night operations. As
with all operations, friendly positions must be positively known before
commencing firing.
(2) Night acquisition. At night or
during periods of low visibility, target acquisition becomes more difficult and
crew responsibilities take on added importance. Proper crew training and knowledge of techniques available can
turn the operation into an advantage for the door gunners. Aids to night target acquisition include--
(a) Artificial illumination.
(b) Night vision devices.
(c) Enemy fire. By spotting muzzle flashes or
tracers, enemy fire may often be spotted from the air. However, the observer must rapidly pinpoint
the muzzle flash or tracer location before it disappears.
d. Principles of Application of Fire.
Application
of fire consists of the methods crews use to get complete and effective
coverage of a target area. Training in
the methods of applying fire can be accomplished only after the aircrews and
door gunners have learned to recognize the different types of targets they may
find in combat, how to properly distribute, overlap and concentrate their
fire, and how to maintain the proper rate of fire.
• Airspeeds 80 to 120 knots. Airspeeds
en route should not exceed 120 knots if door gunners are to be employed. Airspeeds exceeding 120 knots can cause the
M60D machine gun to be ineffective.
• Targets. The door gunner may have to
engage a wide variety of targets
during a mission. Suppression is a
self-defense engagement and is intended to allow friendly helicopters to bypass the threat. Door gunners do not shoot at targets they do not intend to hit. Therefore, coordinated fires from all
aircraft in the formation will enhance the probability of destroying the
target.
• Overlapping fires. Gunners should initiate overlapping fires
to provide the maximum fire available to destroy or suppress targets
encountered en route.
(1) Fires en route. Techniques and procedures
for engaging targets (for example, SA-14 team, observation post, small arms
fire) en route will be specified by the unit to enhance mission security. Targets identified en route will be visible
for a short duration therefore door gunners must be prepared to respond
immediately to this threat.
(2) Approach to landing. Aircrews
and troops are most vulnerable during landing.
Therefore, procedures for gunners to coordinate and employ simultaneous
fires must be developed.
(3) On the ground. Door gunners must fire
without delay or continue firing to suppress or destroy targets while troops
disembark.
(a) During troop egress. Procedures for gunners
firing within the aft 75 degrees (UH-60) fan must be carefully developed to
prevent fratricide. Situations may
occur which require continued suppression while troops egress. Soldiers will have to egress toward the aft
part of the helicopter and immediately take the prone position. This technique is potentially very
dangerous. It takes a great deal of
training and should be practiced during Table IX training.
(b) Overlapping or sector fire.
After
landing, enemy fires may be expected from any direction. Therefore, door gunners must use their
discretion regarding fire control. To
provide the most effective engagements techniques gunners should use
overlapping fires or sector fires.
(4) Departure. Gunners must be trained
according to FM 90-4 in troop dismounting and movement procedures from all
aircraft landing formations. The
gunner's ability to suppress targets is dependent upon troop actions and
movements from aircraft in different formations. Depending on the threat in the landing zone, door gunners may be
required to continue suppression to assist the inserted soldiers while they
organize their actions during the ground tactical plan.
Section
IV. Advanced Tables and Range Training
A-21. TABLE IX
Table IX is the first
opportunity for door gunners to participate in multiship door gunnery. Units will use Table IX to train the TTP
necessary to progress to multiship live-fire.
The commander selects the specific tasks he wants to train during Table IX. This table is the commander’s training and
assessment event prior to live-fire multiship door gunnery. Follow these guidelines when firing Table
IX.
a. A maximum of 5 aircraft
should participate in multiship door gunnery formations. The S3 and UT should select a route for the
flight on which the door gunners can engage targets en route and in the LZ.
b. OPFOR should be available to
engage the aircraft and provide targets for the door gunner. The OPFOR
should be soldiers with infantry MILES equipment. The OPFOR must have weapons capable of
engaging the aircraft.
c. The crews involved in exercise will be
thoroughly briefed and will rehearse the mission.
d. Because the door gunners will not be
shooting live mix ammunition, adjusting
fires onto the targets may be difficult.
This situation is unavoidable.
The training value is in rehearsing formations and fire commands.
e. The objectives of the training are to--
(1) Allow units to refine fire discipline.
(2) Expose door gunners to multiship door
gunnery.
(3) Exercise command and control with blanks.
(4) Train gunners to place fires on target.
(5) Uncover multiship door gunnery weaknesses
within the unit.
A-22. TABLE X
Commanders conduct Table X
at Combined Training Centers. Table X
is the live-fire "graduation exercise" for unit door gunnery
training.
a. The primary reason for
firing Table X at a CTC is that the surface danger area for a helicopter with
two door gunners firing is almost 6,500 meters wide. Because of this fact, most units cannot conduct this training on
their home station range.
However, if commanders have
the resources and adequate range facilities they can fire Table X at their home
station.
b. Commanders will use the same premission
planning procedures, with additional emphasis on safety, for Table X as for
Table IX.
c. The CTC will dictate the scenario, but it
will have the following characteristics:
(1) OPFOR en route and in the LZ.
(2) No troops onboard the aircraft--crew only.
(3) Maximum of five aircraft in the formation.
(4) For initial live-fire, trail is the
mandated formation
d. Table IX must be completed no earlier than
180 days prior to the conduct of Table X.
e. The unit commander must decide whether his
unit is ready for live-fire. A thorough
risk assessment must be completed prior to the exercise.
A-23. GUIDES FOR SUCCESSFUL
TRAINING
Units must thoroughly
prepare for door gunner qualification ranges.
The following are recommendations for range training:
a. Pilots must practice the flight profiles
required by the tables prior to the range.
Running fire and takeoff will present the greatest challenge to the
pilot. In addition, the helicopter
should hover only high enough to give the door gunner intervisibility with the
target. Extremely high hovers present
unrealistic training for the door gunner.
b. Engagement timing is very important. To make the timing objective:
(1) Make sure the pilot of the firing aircraft is ready prior to
target presentation.
(2) Make sure the soldiers timing the engagements practice the calls
to the firing aircrew and timing sequences to ensure uniform scoring.
(3) Make sure the pilots understand the
required flight profile for the engagement.
c. Refer to the running fire diagram in
Chapter 2. Adopt this method to door
gunner running fire. The running fire
engagement must start and stop at the same point for all qualifying door
gunners. In addition, the door gunner
must have intervisibility with the target during the running engagement.
d. Targets.
(1) Door gunners must engage both troop and
vehicle targets during qualification.
The recommended vehicle targets are BMP silhouettes. For troop targets, units have several options.
(2) Figures A-17 and A-18 show the proper use
of 3D and "E" silhouettes on the door gunnery range. TC 25-8 contains the dimensions of the
targets.
Figure A-17. Troop target with
3D silhouettes
Figure A-18. Target lifter with
troop silhouettes