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a. UPR/LWR CHAN CODE - As desired.
b. UPR/LWR CHAN QTY - As desired.
c. MSL MODE - RIPL.
d. CHAN SEL switch - Establish priority
channel.
e. Observe AND for missile selection, coding
and ready status.
Change 4 4-67
TM 1-1520-238-10
f. CPG ARM/SAFE - ARM.
g.
h.
i.
j.
Lase target or call for remote designator.
Observe AND or HIGH ACTION display
for missile system messages.
CPG WAS - MSL.
Pilot establish the helicopter in
constraints.
k.
1.
m.
Weapons trigger - Press and release,
Pilot establish helicopter in constraints.
Repeat steps j. thru 1. until desired number
of missiles have been fired.
4. Ripple Mode - LOAL.
a.
b.
C.
d.
e.
f.
g.
h.
i.
j.
k.
UPR/LWR CHAN CODE - As desired.
UPR/LWR CHAN QTY - As desired.
MSL MODE - RIPL.
CHAN SEL switch - Establish priority
channel.
Observe AND or HIGH ACTION display
for missile selection, coding, ready status.
LOAL select switch - As desired.
CPG ARM/SAFE - ARM.
CPG WAS - MSL.
Pilot establish helicopter in constraints.
Weapons trigger - Press and release.
Pilot establish helicopter in constraints
for alternate channel.
1. Weapons trigger - Press and release.
m. Lase target or call for terminal guidance.
n. Execute steps i. thru m. until desired
number of missiles have been fired.
b. Missile System Shutdown Procedures.
1. MSL MODE - STBY.
2. LOAL select switch - OFF.
3. CHAN SEL - Actuate either direction.
4. MSL switch - OFF.
4.34 ARMAMENT POSTFLIGHT PROCEDURES.
If armament system has been used, check as follows:
1.
2.
3.
4.
5.
6.
7.
7.
Right FAB - Open. Check carrier drive for
rounds.
Gun chute assembly - Check for rounds.
Bolt status indicator - FEED (green range).
Transfer door - Open. Check bolt is to rear, no
rounds in transfer assembly, and chamber
clear.
Transfer door - Secure.
AWS - General condition and security. Check
for leaks and proper piston index groove indication.
Wing stores pylon - Check for unexpended
ordnance.
4-68 Change 4
TM 1-1520-238-10
Section Ill. ACTIVE AND PASSIVE DEFENSE EQUIPMENT
4.34A INFRARED COUNTERMEASURES SET
AN/ALQ-144A, -144(V)3.
Do not continuously look at the infrared
countermeasure transmitter
(fig 2-2) during operation, or for a
period of over 1 minute from a distance
of less than 3 feet. Skin exposure
to countermeasure radiation for
longer than 10 seconds at a distance
less than 4 inches shall be avoided.
The infrared countermeasures set (IR jammer) provides
infrared countermeasure capability. It transmits
radiation modulated mechanically at high and low frequencies
using an electrically heated source. The IR
jammer consists of a control panel (fig 4-20), on the
right side of the pilot instrument panel, and a transmitter,
located on the fairing immediately aft of the main
rotor (fig 2-2). A built-in test monitors operation and
alerts the pilot when a malfunction occurs. If the IR
jammer malfunctions, the IR JAM segment on the pilot
caution/warning panel illuminates. The IR jammer
is not monitored by FD/LS. The IR transmitter receives
28 vdc from the No. 1 essential dc bus through the IR
JAMMER circuit breaker in the electical power center
when the IR JAM/PWR circuit breaker is closed. The
IR jammer cooling fan receives 28 vdc from the No. 2
essential dc bus through the IR JAM/XMTR circuit
breaker. The IR JAM/PWR and IR JAM/XMTR circuit
breakers are located on the pilot overhead circuit
breaker panel.
4.34A.1 Infrared Countermeasures Set Control Panel.
Control of the IR jammer is provided by the IRCM (infrared
countermeasures) part of the IRCM/RDRCM
control panel (fig 4-20) located on the right side of the
pilot instrument panel. The control panel receives 28
vdc from the No. 2 essential dc bus through the PEN
AIDS CONTR circuit breaker on the pilot overhead
circuit breaker panel. When the ON-OFF switch on the
IRCM panel is set to ON, the power distribution and
control circuits are activated. The source begins to
heat, and the servo motor and drive circuits are energized,
turning on the high and low speed modulators. A
signal is applied to stabilize subsystem operations before
energizing the built-in test function. After a one
minute warmup period, the stabilizing signal is removed
and the subsystem operates normally. Setting
the ON-OFF switch to OFF causes the power distribution
　
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