| 4-337 | Dress Cover | BAS Incorporated | Current | 2008-07-27 |
| 40-0010 | Tungsten Halogen Lamp | Aeroflash Signal | Historical | 1986-03-30 |
| 40-0027 | Tungsten Halogen Lamp | Aeroflash Signal | Historical | 1986-03-30 |
| 40-010-19,-20 | Air Conditioning System | Meggitt Addison Inc (formerly Keith Products LP) | Current | 1998-06-15 |
| 40-010-29,-30 | Air Conditioning System | Meggitt Addison Inc (formerly Keith Products LP) | Current | 1998-06-15 |
| 40-0102-1 and -4 | Air Conditioning System | Meggitt Addison Inc (formerly Keith Products LP) | Current | 1995-10-31 |
| 40-011-109 | Air Conditioning System Kit | Meggitt Addison Inc (formerly Keith Products LP) | Historical | 2008-06-09 |
| 40-011-119 | Air Conditioning System Kit | Meggitt Addison Inc (formerly Keith Products LP) | Current | 2008-06-09 |
| 40-011-129 | Air Conditioning System Kit | Meggitt Addison Inc (formerly Keith Products LP) | Historical | 2008-06-09 |
| 40-011-139 | Air Conditioning System Kit | Meggitt Addison Inc (formerly Keith Products LP) | Historical | 2008-06-09 |
| 40-011-39 | Air Conditioning System Kit | Meggitt Addison Inc (formerly Keith Products LP) | Historical | 2008-06-09 |
| 40-011-49 | Air Conditioning System Kit | Meggitt Addison Inc (formerly Keith Products LP) | Historical | 2008-06-09 |
| 40-011-59 | Air Conditioning System Kit | Meggitt Addison Inc (formerly Keith Products LP) | Historical | 2008-06-09 |
| 40-011-69 | Air Conditioning System Kit | Meggitt Addison Inc (formerly Keith Products LP) | Historical | 2008-06-09 |
| 40-011-79 | Air Conditioning System Kit | Meggitt Addison Inc (formerly Keith Products LP) | Current | 2008-06-09 |
| 40-011-89 | Air Conditioning System Kit | Meggitt Addison Inc (formerly Keith Products LP) | Current | 2008-06-09 |
| 40-011-99 | Air Conditioning System Kit | Meggitt Addison Inc (formerly Keith Products LP) | Current | 2008-06-09 |
| 40-0116 | Auxiliary Seat | Aviation Fabricators | Historical | 1995-01-22 |
| 400-( ) | Ambulance Unit | Med-Pac Inc | Current | 2004-12-07 |
| 400-( ) | Ambulance Unit | Med-Pac Inc | Historical | 2003-03-20 |
| 400-( ) | Ambulance Unit | Med-Pac Inc | Historical | 2003-08-09 |
| 400-( ) | ]=Ambulance Unit | Med-Pac Inc | Historical | 2003-10-30 |
| 400-25, -26, -27 & -28 | Aileron Seal | WASP Company | Current | 1994-09-29 |
| 4000-1 | Hydraulic pump | Spoilers Inc | Current | 2006-05-10 |
| 4000-1 | Hydraulic pump assy | Spoilers Inc | Current | 2006-05-10 |
| 4000-11 and -12 | Form Block | WASP Company | Current | 1994-09-29 |
| 4000-15 and -16 | Form Block | WASP Company | Current | 1994-09-29 |
| 4000-17 Outbd. 4000-18 Inbd | End Plate | WASP Company | Current | 1994-09-29 |
| 4000-21 & -22 | Cuff | WASP Company | Current | 1994-09-29 |
| 4000-21 & -22 D | Cuff | WASP Company | Current | 1994-09-29 |
| 4000-32 | Retainer | WASP Company | Current | 1994-09-29 |
| 4000-33 | Lens Fastener | WASP Company | Current | 1994-09-29 |
| 4000-34 | Landing Light Lens | WASP Company | Current | 1994-09-29 |
| 4000-35 | Stall Fence | WASP Company | Current | 1994-09-29 |
| 4000-36 | Stall Fence | WASP Company | Current | 1994-09-29 |
| 4000-37 | Stall Fence | WASP Company | Current | 1994-09-29 |
| 4000-38 | Stall Fence | WASP Company | Current | 1994-09-29 |
| 4000-39 | Stall Fence Bkt | WASP Company | Current | 1994-09-29 |
| 4000-40 RH, 4000-41 LH | Wing Tip | WASP Company | Current | 1994-09-29 |
| 4000001 | Avionics Cooling Fan, Model FN100B | Troll Avionics Inc | Current | 1995-11-08 |
| 40005320-1 | System, Pneumatic | Meggitt Safety Systems Inc | Historical | 2015-02-23 |
| 40005320-1 | System, Pneumatic | Pacific Scientific, HTL/Kin-Tech Div | Current | 1995-11-15 |
| 40005320-2 | System, Pneumatic | Meggitt Safety Systems Inc | Historical | 2015-02-23 |
| 40005320-2 | System, Pneumatic | Pacific Scientific, HTL/Kin-Tech Div | Current | 1995-11-15 |
| 40005337-1 | Bottle Assembly | Meggitt Safety Systems Inc | Historical | 2015-02-23 |
| 40005337-1 | Bottle Assembly | Pacific Scientific, HTL/Kin-Tech Div | Current | 1995-11-15 |
| 40005338-2 | Bottle Assembly | Meggitt Safety Systems Inc | Historical | 2015-02-23 |
| 40005338-2 | Bottle Assembly | Pacific Scientific, HTL/Kin-Tech Div | Current | 1995-11-15 |
| 4001 | Gross Weight Increase Kit - Aircraft Payload Extender XL | AeroAcoustics Aircraft Systems Inc | Current | 2007-06-10 |
| 4003-100 | Radome | Norton Performance Plastics Corp, Composites Operations | Current | 1999-08-08 |