| Mitchell Model AK494 or AK494FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK494, AK494FD | - | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK494/FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK495 | Century I | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK496, AK496FD | - | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK496/FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK497 | Century II B Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK498 | Piper Altimatic IIIC Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK499, AK499FD | - | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK499/FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK500, AK500FD | - | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK500/FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK501 | Century III Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK501 Century III | - | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK503 or AK503FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK503, AK503FD | - | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK503FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK504 | Piper Altimatic IIIC Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK505 | Autocontrol III B | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK506 | AutoControl IIIB | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK508 | - | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK510 | Century IIB | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK511 | Century III | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK514 | Century I Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK515 | Century IIB Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK517 | Auto-Control IIIB | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK518 | Century III Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK519 | Century IIB | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK520 | Century III Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK521 | Century III Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK522 or AK522FD | Century IV Autopilot or Century IV Flight Director | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK522, AK522FD | - | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK522FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK523 | Century III Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK524 | Century IIB | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK525 or AK525FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK525, AK525FD | - | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK525FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK527 | Century I Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK528 | Century IIB Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK529 | Altimatic IIIC Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK530 | AutoControl IIIB Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK531 | Autoflite II Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK532 | Command Electric Trim System | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK533 | Century III | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK536 or AK536FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK536FD | Century IV Autopilot or Century IV Flight Director Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK537 | Century III Autopilot | Century Flight Systems Inc | | 22 | Flight Controls | PMA |
| Mitchell Model AK538 | Command Electric Trim | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |
| Mitchell Model AK539 or AK539FD | Century IV Autopilot & Century IV Flight Director Autopilot | Century Flight Systems Inc | — | 22 | Flight Controls | PMA |