TM 1-1520-238-23
1-220
1.66.
HELICOPTER JACKING (TRIPOD JACKS AT THREE POINTS)
1.66.1. Description
This task covers:
Jacking.
1.66.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Fuselage jack adapter (item 1, App H) (p/o item 391,
App H) (2)
3-ton tripod hydraulic jack (item 184, App H)
5-ton aircraft landing gear jack (item 183, App H) (2)
Special tool kit (item 390, App H) (2)
Personnel Required:
67R
Attack Helicopter Repairer
Three persons to assist
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
G.1
Plumb bob, bracket, and target installed
1.66.3. Jacking
WARNING
To prevent death or injury to personnel, jack helicopter evenly on a firm flat surface so that it
stays level at all times. Helicopter is unstable on jacks. Do not jack helicopter if wind exceeds
15 mph. If injury occurs, seek medical aid.
CAUTION
Area shall be roped off and warning signs “HELICOPTER ON JACKS” shall be displayed.
Unauthorized personnel shall not be in or around helicopter while it is on jacks.
Airframe structure damage can occur if stress panels are not in place before jacking. Ensure all
stress panels are installed (para 2.6) and canopies are closed (para 1.56).
A pound sign (#) after an access number indicates a stress panel that must be installed during
jacking operations.
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