TM 1-1520-238-23
11-757
11.172. PILOT LONGITUDINAL SHEAR PIN ACTIVATED DECOUPLER (SPAD)
REMOVAL/INSTALLATION
11.172.1. Description
This task covers:
Removal Cleaning. Inspection. Installation.
11.172.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Flight control rigging kit (item 267, App H)
10 - 50 inch-pound 1/4-inch drive click type torque
wrench (item 434, App H)
Materials/Parts:
Cotter pin (2)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1520-238-T
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access panel R200 removed
11.46
Pilot cyclic stick cover removed
1.72
External primary hydraulic power applied
2.161
Pilot seat removed
13.28
Air duct No. 21 removed
WARNING
Installation of a solid steel shear pin in
a BUCS-equipped aircraft will render
the BUCS system inoperative. Installa-
tion of a frangible-type shear pin in an
aircraft not equipped with BUCS may
result in loss of flight controls and
possible loss of aircraft.
CAUTION
To prevent damage to flight control sys-
tem components, do not use force if bind-
ing or roughness occurs while moving
controls with hydraulic power.
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M04-1742-20
SOLID STEEL
FOR USE ON NON - BUCS AIRCRAFT ONLY
FRANGIBLE TITANIUM
FOR USE ON BUCS AIRCRAFT ONLY
