| 1300540-1 | Bleed Controller With Muffler/Flow Sensor | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1300590-1 | Bleed Air Trim Valve | Enviro Systems Inc. | | 75 | Pneumatics | PMA |
| 1300590-2 | Bleed Air Trim Valve | Enviro Systems Inc. | | 25 | Interior / Furnishings | PMA |
| 1300610-53 | Controller, ECS | Enviro Systems Inc. | — | 20 | unknown | PMA |
| 1300610-54 | ECS Controller | Enviro Systems Inc. | | 21 | Environmental / Cabin | PMA |
| 1300650-10 | ECS Temperature Controller | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1300650-11 | ECS Temperature Controller | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1300650-12 | Controller, ECS-Dual Temperature | Enviro Systems Inc. | — | 38 | Interior / Furnishings | PMA |
| 1300650-9 | ECS Temperature Controller | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1300670-5 | ECS Temperature Controller | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1300690-1 | Controller, ECS | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1300770-1 | Muffler, Assembly Acoustic | Enviro Systems Inc. | — | 20 | unknown | PMA |
| 1300820-2 | Valve, Flow Control | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1300830-1 | Valve, Ejector-Heating | Enviro Systems Inc. | — | 20 | unknown | PMA |
| 1300830-2 | Ejector-Heating Valve | Enviro Systems Inc. | | 21 | Environmental / Cabin | PMA |
| 1300960-10 | Sensor, Bleed Air High Temp. | Enviro Systems Inc. | — | 75 | Pneumatics | PMA |
| 1310120-21 | Check Valve Inlet Air | Enviro Systems Inc. | — | 29 | Hydraulics | PMA |
| 1310150-1 | Check Valve Assembly | Enviro Systems Inc. | | 21 | Environmental / Cabin | PMA |
| 1310150-8 | Check Valve, 2 Inch | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1310410-4 | Valve, Ram Air Check | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1320200 | Heat Exchanger | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1320250-1 | Heat Exchanger, Bleed Air | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1320260-1 | Heat Exchanger, Bleed Air | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1320260-2 | Bleed Air Heat Exchanger, Sis Air Conditioning | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1320260-3 | Heat Exchanger, Bleed Air | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1330160-8 | Valve, Two Stage Control | Enviro Systems Inc. | — | 21 | Pneumatics | PMA |
| 1330310-3 | Valve, Pressure Regulator & Shutoff | Enviro Systems Inc. | — | 38 | Interior / Furnishings | PMA |
| 1330360-5 | Valve Assy, Pressure Reg. & Shutoff | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 1330500-2 | Shut Off Valve | Enviro Systems Inc. | — | 21 | Pneumatics | PMA |
| 1330500-30 | Solenoid Shut Off Valve | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 350TA000-2 | Vapor Cycle Air Conditioning System | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 355R005 | Vapor Cycle Air Conditioning System | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 44TA000-1 | Vapor Cycle Air Conditioning System | Enviro Systems Inc. | | 21 | Environmental / Cabin | PMA |
| 500A000 | Freon Air Conditioning System | Enviro Systems Inc. | | 21 | Environmental / Cabin | PMA |
| 500A021-1 | Seat Access Panel | Enviro Systems Inc. | — | 25 | Interior / Furnishings | PMA |
| 52770-201 | Cabin Altitude Controller and Rate Indicator | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 52775-001 | Pressurization Controller and Adapter | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 52811-472 | Cabin Air Controller | Enviro Systems Inc. | — | 25 | Interior / Furnishings | PMA |
| 52811-474 | Cabin Air Controller | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| 52812-472 | Outflow Valve, 3” | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| AS350-1-11 | Vapor Cycle Air Conditioning System | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| AS350-1-12 | Vapor Cycle Air Conditioning System | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| AS350-1-2 | Vapor Cycle Air Conditioning System | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| AS350-1-5 | Vapor Cycle Air Conditioning System | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| AS350-2-1 | Vapor Cycle Air Conditioning System | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| AS350-2-2 | Vapor Cycle Air Conditioning System | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| AS350-2-5 | Vapor Cycle Air Conditioning System | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| DL-30-1, DL-30-2 | Freon Air Conditioning System | Enviro Systems Inc. | — | 21 | Pneumatics | PMA |
| DL-4 | Headliner Duct System | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |
| DL-5 | Freon Air Conditioning System | Enviro Systems Inc. | — | 21 | Environmental / Cabin | PMA |