TM 1-1500-204-23-1
(9)
Head aircraft into prevailing wind when
wind velocity does not exceed velocity given in step (8).
(10)
After jacks are extended, make no
attempt to lock hydraulic ram in place by use of a
clamp. Jacks with threaded collar locks or locking pins
will not permit load to lower, but may require additional
lift to disengage collar lock or remove pin.
(11)
Prior to lowering aircraft, make a careful
inspection to ensure that retractable gear (when
applicable) are in down-and-locked position, ground
locking devices are installed, and that there are no
maintenance stands, support equipment, or other
objects under aircraft.
(12)
After aircraft no longer rests on jacks,
remove jacks from under aircraft as quickly as possible.
b.
Hoisting. Use the following procedures for in
and out of hangar hoisting:
CAUTION
Hoist
aircraft
out-of-hangar
only
when wind is calm. Otherwise
damage to aircraft may result.
(1)
Remove
all
excess
items
such
as
baggage, etc, from aircraft. Do not allow personnel in or
on aircraft during hoisting operations.
(2)
Apply ballast as required by applicable
maintenance manual.
(3)
Attach
hoist
sling
at
hoist
location
specified in applicable maintenance manual.
(4)
Ensure that there is sufficient clearance
above aircraft to complete desired operation.
(5)
Fasten ropes to mooring points of aircraft
and use ropes to steady and guide aircraft during
hoisting operation.
(6)
Hoist aircraft cautiously and smoothly,
avoiding sudden starts, stops, and drops.
(7)
Ensure that retractable gear down-lock
pins are installed prior to lowering aircraft.
(8)
Ensure that all maintenance and support
equipment which could injure personnel or damage
aircraft is removed from under aircraft.
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