53-01 Forward Air Stair
52-03 Door Warning Light System
52-05 Left Main Cabin Door Pressure Stop Fittings
52-06 Lower Cargo Doors Pressure Stop Fittings
52-07 Entry/Service Door Hold-Open Latch Assemblies
52-09 Lower Cargo Doors Door Balance Mechanism
52-14 Lower Cargo Doors Hold Open Mechanism/Device
52-17 Boeing/C&D Aerospace Enhanced Flight Deck Security Door Automatic Locking System
52-18 Boeing/C&D Aerospace Enhanced Flight Deck Security Door Dead Bolt
52-20 Flight Deck Door Pressure Relief Panels
52-22 Flight Deck Door Hold Open Device
52-23 Flight Deck Viewing Port