5200 DOORS 5210 PASSENGER/CREW DOORS 5220 EMERGENCY EXITS 5230 CARGO/BAGGAGE DOORS 5240 SERVICE DOORS 5241 GALLEY DOORS 5242 E/E COMPARTMENT DOORS 5243 HYDRAULIC COMPARTMENT DOORS 5244 ACCESSORY COMPARTMENT DOORS 5245 AIR CONDITIONING COMPART. DOORS 5246 FLUID SERVICE DOORS 5247 APU DOORS 5250 FIXED INNER DOORS 5260 ENTRANCE STAIRS 5270 DOOR WARNING SYSTEM 5280 LANDING GEAR DOORS 5297 DOOR SYSTEM WIRING