| 4004K-B | Radome Assembly 12" Bendix RDR-100/110 Series Radar Systm | Norton Performance Plastics Corp, Composites Operations | Current | 1992-08-24 |
| 4004X | Radome | Norton Performance Plastics Corp, Composites Operations | Current | 1992-08-24 |
| 4005 | Annunciator panel assy | Spoilers Inc | Current | 2006-05-10 |
| 4007-13 | Spacer | S-TEC Corporation | Current | 2003-04-14 |
| 4009-100 4009-101 | Cessna 400 Series Quartz Radome | Norton Performance Plastics Corp, Composites Operations | Current | 1996-12-16 |
| 4009521-0501 | FCS-810 Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009521-0502 | FCS-810 Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009523-0501 | FCS-810 Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009525-0501 | FCS-810 Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009529-0501 | FCS-810 Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009532-0501 | M-4D Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009532-0502 | M-4D Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009532-0503 | M-4D Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009545-0501 | M-4D Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009546-0501 | FCS-810 Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009551-0501 | FCS-870 with YD Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009551-0502 | FCS-870 without YD Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009553-0502 | FCS-870 without YD Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009554-0501 | FCS-870 with YD Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009554-0502 | FCS-870 without YD Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009554-0503 | FCS-870 with YD with PA Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009554-0504 | FCS-870 without YD with PA Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009557-0502 | FCS-870 without YD Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009557-0504 | FCS-870 without YD with PA Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009557-0505 | FCS-870 without YD, with and without AC Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009557-0506 | FCS-870 with PA and ASH Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009561-0502 | FCS-870 without YD Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009561-0503 | FCS-870 with PA and ASH Automatic Flight Control System Installation Kit | Honeywell International Inc | Current | 1999-12-01 |
| 4009K-B | Radome Assembly Bendix RDR-100/110 Syst. 12" | Norton Performance Plastics Corp, Composites Operations | Current | 1992-08-24 |
| 4009X | Radome Kit | Norton Performance Plastics Corp, Composites Operations | Current | 1992-08-24 |
| 4010 | Pump mounting assy | Spoilers Inc | Current | 2006-05-10 |
| 4010 | Pump mounting tray | Spoilers Inc | Current | 2006-05-10 |
| 4011 | Wing Skin Doubler | Spoilers Inc | Current | 2014-05-14 |
| 4013 | Spoiler panel, left | Spoilers Inc | Current | 2006-05-10 |
| 4013 | Spoiler panel, right | Spoilers Inc | Current | 2006-05-10 |
| 4014 | Spoiler panel, left | Spoilers Inc | Current | 2006-05-10 |
| 4014 | Spoiler panel, right | Spoilers Inc | Current | 2006-05-10 |
| 402 | Left or right lower door window | LP Aero Plastics Inc | Current | 2007-12-26 |
| 40200001 | Recognition Lights Stabilizer | Devore Aviation Corp of America | Current | 1976-08-04 |
| 4021 | Doubler, wing skin right | Spoilers Inc | Current | 2006-05-10 |
| 4021 | Wing skin doubler, left | Spoilers Inc | Current | 2006-05-10 |
| 4022 | Doubler, wing skin left | Spoilers Inc | Current | 2006-05-10 |
| 4022 | Wing skin doubler, right | Spoilers Inc | Current | 2006-05-10 |
| 40280-0028 | Actuator | Sigma Tek Inc | Current | 1996-08-03 |
| 40280-0328 | Actuator | Sigma Tek Inc | Current | 1996-08-03 |
| 404 | Left front door domed window | LP Aero Plastics Inc | Current | 2008-10-05 |
| 40400001 | Recognition Light -Stabilizer | Devore Aviation Corp of America | Current | 1976-08-04 |
| 404700-1 | Positive-Negative Relief Valve | HR Textron Inc | Current | 1999-12-08 |
| 404700-1 | Positive-Negative Relief Valve | HR Textron Inc | Historical | 2000-02-16 |
| 404700-3 | Positive-Negative Relief Valve | HR Textron Inc | Current | 1999-12-08 |