| 30584MM015-305 | Door 2 RH Vent Ducts Mod Kit | AAR Aircraft Services Inc. | | 52 | Structures | PMA |
| 30584SM007-303 | Door 2 LH S6L Fitting Installation Kit | AAR Aircraft Services Inc. | | 52 | Structures | PMA |
| 30602283 | PAN | — | | 52 | unknown | |
| 30762KZZ | SOLENOID | — | | 52 | unknown | OEM |
| 30834 | VALVE-SEQUENCE | — | — | 52 | Structures | |
| 3097 -1, -3, -5, -7, -9, -11, -13, -15, -17, -501. | Components Sliding Door | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 3097-1 | Components Sliding Door | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 3097-11 | Components Sliding Door | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 3097-13 | Components Sliding Door | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 3097-15 | Components Sliding Door | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 3097-17 | Components Sliding Door | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 3097-3 | Components Sliding Door | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 3097-5 | Components Sliding Door | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 3097-501. | Components Sliding Door | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 3097-7 | Components Sliding Door | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 3097-9 | Components Sliding Door | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 30973-262 | ELECTROVALVE | — | — | 52 | Electromechanical | |
| 30P265033001-501 | UPPER ROD ASSY MLG DOOR MECHANISM | — | | 52 | Structures | OEM |
| 30P265033001-501 | UPPER ROD ASSY MLG DOOR MECHANISM | — | | 52 | Structures | OEM |
| 30P265036002-501 | LOWER ROD ASSY MLG DOOR MECHANISM | — | | 52 | Structures | OEM |
| 30P265036002-501 | LOWER ROD ASSY MLG DOOR MECHANISM | — | | 52 | Structures | OEM |
| 30P283002601-501 | UPPER ROD ASSY, NLG FRONT DOOR MECHANISM | — | | 52 | Structures | OEM |
| 30P283002601-501 | UPPER ROD ASSY, NLG FRONT DOOR MECHANISM | — | | 52 | Structures | OEM |
| 30P283002801-501 | LOWER ROD ASSY NLG FRONT DOOR MECH. | — | | 52 | Structures | OEM |
| 30P283002801-501 | LOWER ROD ASSY NLG FRONT DOOR MECH. | — | | 52 | Structures | OEM |
| 30P283002801-502 | LOWER ROD ASSY NLG FRONT DOOR MECH. | — | | 52 | Structures | OEM |
| 30P283002801-502 | LOWER ROD ASSY NLG FRONT DOOR MECH. | — | | 52 | Structures | OEM |
| 30P283003001-501 | ROD ASSY, NLG AFT DOOR MECHANISM | — | | 52 | Structures | OEM |
| 30P283003001-501 | ROD ASSY, NLG AFT DOOR MECHANISM | — | | 52 | Structures | OEM |
| 30P333212600-501 | PUSH- PULL ROD DOOR LOCK MECHANISM | — | | 52 | Structures | OEM |
| 30P333212600-501 | PUSH- PULL ROD DOOR LOCK MECHANISM | — | | 52 | Structures | OEM |
| 30P333212600-509 | PUSH- PULL ROD DOOR LOCK MECHANISM | — | | 52 | Structures | OEM |
| 30P333212600-509 | PUSH- PULL ROD DOOR LOCK MECHANISM | — | | 52 | Structures | OEM |
| 31-25LG FAA-PMA | door cable | other | — | 52 | Structures | OEM |
| 3100 -1, -3. | Sliding Door Installation One Piece Barrier | Aeronautical Engineers Inc | | 52 | Structures | PMA |
| 310003-017 | Door | Machen, Inc. | — | 52 | Structures | PMA |
| 3101220-001 | Stair Upgrade Kit | AeroControlex Group, Inc. | | 52 | Structures | PMA |
| 3102SX18-18 | Door Bolting System, CW and CCW | Adams Rite Aerospace Inc | — | 52 | Structures | PMA |
| 3102SX26-29 | Door Bolting System, CW and CCW | Adams Rite Aerospace Inc | — | 52 | Structures | PMA |
| 31125 | Door Cables | McFarlane Aviation Inc. | — | 52 | Structures | PMA |
| 31125DG FAA-PMA | door cable | other | — | 52 | Structures | OEM |
| 3117-1 | Entry Door Seal (all models) | — | | 52 | Structures | OEM |
| 3117-1 | Entry Door Seal (all models) | — | | 52 | Structures | OEM |
| 311A1065-127 | door ay | Boeing | | 52 | Structures | |
| 311A1065-132 | door ay | other | — | 52 | Structures | OEM |
| 311A1065-133 | door ay | other | — | 52 | Structures | OEM |
| 311A1065-59A | door ay | Boeing | — | 52 | Structures | |
| 311A1065-65 | door | Boeing | — | 52 | Structures | OEM |
| 311A1065-78 | door ay | Boeing | — | 52 | Structures | unknown |
| 311A1065-79 | door ay | Boeing | — | 52 | Structures | OEM |