TM 1-1520-238-23
G-2
SECTION I. HELICOPTER WEIGHING INFORMATION
G.1.
HELICOPTER WEIGHING (AIRCRAFT ON JACKS)
G.1.1. Description
This task covers:
Preparation. Weighing. Calculations.
G.1.2. 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)
Weighing kit (item 196, App H)
Strut locks (item 203, App H) (p/o item 25 and 194,
App H) (2)
Aircraft maintenance kit (item 207, App H) (p/o item 25
and 194, App H) (plumb bob leveling kit)
Tripod aircraft tail stand (item 344, App H) (2) (exten-
sion legs removed)
Materials/Parts:
Wood block, 2 in. x 6 in. x 12 in.
Personnel Required:
67R3F
Attack Helicopter Repairer/Technical
Inspector
Three persons to assist
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
1.19
Helicopter defueled, SPA method
1.24
Engine oil system serviced
1.26
APU oil system serviced
1.28
Engine nose gearboxes serviced
1.30
Intermediate gearbox serviced
1.31
Tail rotor gearbox serviced
1.32
Main transmission serviced
1.34
Hydraulic system serviced
2.2
Access doors L135 and R135 opened
1.41
Main landing gear shock struts collapsed
WARNING
Helicopter is unstable on jacks. Jack helicopter evenly and carefully on a firm, level, flat
surface. Death or serious injury can result if helicopter should fall off jacks.
When weighing helicopter, ensure that area is roped off and that multiple warning signs that
read “HELICOPTER ON JACKS” are prominently displayed. Do not allow unauthorized persons
in or around helicopter while it is on jacks.
CAUTION
Weighing should be done inside a hangar with all doors closed. Weighing the helicopter outdoors is not
recommended as wind velocities may affect the accuracy of scale readings.
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