4-142. PREPARATION OF SEMITRAILER FOR AIRCRAFT LOADING (Con't).
Remove dummy couplings from service and emergency air couplings at front of semitrailer. Remove two air
lines from dummy coupling bracket under front of left dolly siderail and connect to proper air couplings under
Install 12 ft access ladder, personnel boarding ladders, and any attaching hardware such as ladder brackets
and equipment stowage compartments that were removed.
Close draincock on pressure tank.
4-331 /(4-332 Blank)