TM 1-1520-238-23
12-318
Change 8
12.77.
CANOPY SEVERANCE DEVICE REMOVAL/INSTALLATION
12.77.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
12.77.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
30 - 150 inch-pound 1/4-inch drive click type torque
wrench (item 435, App H)
Materials/Parts:
Packing (7)
Wire (item 224, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1270-476-20
TM 9-1230-476-20-1
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
TM 9-1230-476-20-1
Pilot and/or CPG FIRE
CONTROL panel removed
(if required)
TM 1-1270-476-20
Optical relay tube removed
(if required)
WARNING
Detonation cords are explosive. Do not move canopy initiator handles or remove safety pins.
Detonation may cause injury to personnel. If injury occurs, seek medical aid.
CAUTION
Do not twist cord or damage booster cup at end of cord assembly.
Do not damage canopy transparent panels or transparent barrier when performing maintenance in
crew stations.
Ensure that the detonating cord is not kinked. A kink in the cord may prevent the cord from firing.
If a cord has been kinked it is no longer serviceable.
NOTE
This task is typical for any detonation cord and its associated components, although differing in
location and configuration.
Cap or plug parts after disconnecting components. Remove plugs or caps before installing compo-
nents.
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