TM 55-1520-240-23-1
1-31
LEVEL AND WEIGH HELICOPTER (4-POINT) (AVIM)
(Continued)
1-31
The maximum gross weight for 4-point
weighing is 33,000 pounds. Jacking
when helicopter weight is over limit
can damage structure and injure
personnel. Do not jack when weight
is over limit.
Blades can be damaged if there is not
enough clearance.
NOTE
Defueling of the aircraft is not a
requirement, to perform this task.
That option rests with the operating
unit.
1.
Make sure there will be clearance for blades (1)
after jacking. Make sure cargo ramp (2) is closed.
SECURE PLUMB BOB
2.
Pull back insulation (3) above upper aft corner of
cabin doorway for access to bracket (4).
3.
Tie plumb bob string (5) around bracket (4)
so that plumb bob (6) hangs from V-notch of
bracket, slightly above (7).
NOTE
Refer to TM 55-1500-342-23 for
additional information on helicopter
weighing.
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