| 1U128-003, -004, -005 | Vacuum Pump, Model 1U128B | Sigma Tek Inc | — | 37 | Engine Accessories | PMA |
| 1U149-007-1 | Autopilot Attitude Gyro, Model 5000E-9, and Model 5000E-11 | Sigma Tek Inc | — | 22 | Avionics / Electronics | PMA |
| 1U228-001, -002, -003 | Vacuum Pump, Model 1U228( ) | Sigma Tek Inc | — | 37 | Engine Accessories | PMA |
| 1U262-003-14 | Autopilot Directional Gyro, Model 4000C, and Model 4000C-1 | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 1U262-004-15 | Autopilot Directional Gyro, Model 4000C, and Model 4000C-1 | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 1U453-001 | Type 1U453 VHF COM Frequency Preselect | Sigma Tek Inc | — | 23 | Avionics / Electronics | PMA |
| 1U453-002 | Type 1U453 VHF COM Frequency Preselect | Sigma Tek Inc | — | 23 | Avionics / Electronics | PMA |
| 1U454-001 | Type 1U454 VHF/NAV Frequency Control | Sigma Tek Inc | — | 23 | Avionics / Electronics | PMA |
| 1U456-001 | Type 1U456 ADF Frequency Preselect | Sigma Tek Inc | — | 34 | Avionics / Electronics | PMA |
| 1U457-001 | Type 1U457 ADF Control Panel | Sigma Tek Inc | — | 34 | Avionics / Electronics | PMA |
| 1U458-001 | Type 1U458 ATC Transponder/ Marker | Sigma Tek Inc | — | 34 | Avionics / Electronics | PMA |
| 1U459-001 | Type 1U459 HF COM Frequency Control | Sigma Tek Inc | — | 23 | Avionics / Electronics | PMA |
| 1U460-001 | Type 1U460 Audio Selector Panel | Sigma Tek Inc | — | 23 | Avionics / Electronics | PMA |
| 1U461-001 | Type 1U461 NAV Frequency Controller | Sigma Tek Inc | — | 34 | Avionics / Electronics | PMA |
| 1U462-001 | Type 1U462 DME Preselect Freq. Controller | Sigma Tek Inc | — | 34 | Avionics / Electronics | PMA |
| 1U471-001 | Type 1U471 Audio Selector Panel | Sigma Tek Inc | — | 23 | Avionics / Electronics | PMA |
| 1U471-003 | Type 1U471 Audio Selector Panel | Sigma Tek Inc | — | 23 | Avionics / Electronics | PMA |
| 23-501-04-2, 1U149-006-1 | Autopilot Attitude Gyro Model 5000E-8, and Model 5000E-10 | Sigma Tek Inc | — | 22 | Avionics / Electronics | PMA |
| 23-501-05-2 | Autopilot Attitude Gyro, Model 5000E-9, and Model 5000E-11 | Sigma Tek Inc | — | 22 | Avionics / Electronics | PMA |
| 26360-0100 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 28870-1214 | Controller Amplifier | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 28870-1228 | Controller Amplifier | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 28900-0000 | Omni Coupler | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 29100-0000 | Dynaverter | Sigma Tek Inc | | 24 | Electromechanical | PMA |
| 29510-0001 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 29510-0500 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 29510-0501 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 30510-1128 | Control Unit | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 30520-1028 | Computer Amplifier | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 35070-0028 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 35070-0128 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 35070-0228 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 35070-0328 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 35070-0428 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 35070-0628 | Actuator | Sigma Tek Inc | | 22 | Electromechanical | PMA |
| 35070-0728 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 35070-1014 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 35070-1028 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 35070-1128 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 35070-1214 | Actuator | Sigma Tek Inc | | 22 | Flight Controls | PMA |
| 35660-1014 | Controller Amplifier | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 35660-1028 | Controller Amplifier | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 35660-1114 | Controller Amplifier | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 35660-1128 | Controller Amplifier | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 35670-1014 | Control Unit | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 35670-1028 | Control Unit | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 35670-1114 | Control Unit | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 35670-1128 | Control Unit | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 35910-0014 | Computer Amplifier | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |
| 35910-1028 | Computer Amplifier | Sigma Tek Inc | | 22 | Avionics / Electronics | PMA |