TM 9-2320-366-20-5
(13) Remove two tiedowns (7 and 20) from four crane
pockets (21).
CAUTION
Ensure quick release pins are installed
through both sides of crane pockets. Failure
to  comply  may  result  in  damage  to
equipment.
(14) Install four plugs (19) in crane pockets (21) with quick
release pins (18).
(15) Raise ladder (TM 9-2320-366-10-1).
20-441