| ASU-412MDMNT-1 | MDMNT Filter | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electronics | PMA |
| ASU-412RDR-2 | 412 RDR Filter | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-430-ALTVSI-1 | Alternate VSI Filter | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-430-AP-1 | Auto Pilot Filter | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-430-BRACKET-1 | 430 Light Bracket | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-430-CORY1-1 | 430 Annunciator Filter 1 | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-430-CORY10-1 | 430 Annunciator Filter 10 | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-430-CORY2-1 | 430 Annunciator Filter 2 | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-430-CORY3-1 | 430 Annunciator Filter 3 | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-430-CORY4-1 | 430 Annunciator Filter 4 | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-430-CORY5-1 | 430 Annunciator Filter 5 | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-430-CORY6-1 | 430 Annunciator Filter 6 | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-430-CORY7-1 | 430 Annunciator Filter 7 | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-430-CORY9-1 | 430 Annunciator Filter 9 | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-430-EHSI-1 | EHSI Filter | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-430-EID-1 | EID Filter | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-800MHZ-1 | Orion Ericsson 800 Mhz Filter | Aviation Specialties Unlimited Inc | — | 33 | Electromechanical | PMA |
| ASU-A109-ADIB-1 | Pilot's ADI Button Filter | Aviation Specialties Unlimited Inc | — | 33 | Avionics / Electronics | PMA |
| ASU-A109-HSI-2 | A109 HSI-2 | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109-IND-1 | Round Indicator Filter | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-A109-IND-2 | Agusta A109 Multiple Instrument Filter | Aviation Specialties Unlimited Inc | — | 33 | Avionics / Electrical | PMA |
| ASU-A109-IND-3 | Engine / Rotor RPM Gauge | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109-INST-2 | Agusta Instrument Type 2 | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109-INST-3 | Agusta Instrument Type 3 | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-A109-INST-4 | Agusta Instrument Type 4 Filter | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109-LDG-1 | Landing Gear Position Indicator | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109-LDG-2 | Landing Gear Annunciator Filter | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-A109-RADALT-1 | A109 Radar Altimeter | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109ADF-2 | Sperry A109 ADF Filter | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109AH-1 | Sperry A109 Artificial Horizon | Aviation Specialties Unlimited Inc | — | 33 | Avionics / Electrical | PMA |
| ASU-A109AH-2 | A109 Artificial Horizon Annunciator Lights Blue | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-A109AH-3 | A109 Artificial Horizon Annunciator Lights Yellow | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-A109AH-4 | A109 Artificial Horizon Annunciator Lights Green | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-A109ARTHZ-3 | A109 A Model Artificial Horizon Filter | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109C-AH-1 | A109C Artificial Horizon | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109C-AH-2 | A109C Artificial Horizon Annunciator Lights | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-A109C-CW-1 | A109C Caution & Warning, Green | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109C-CW-2 | A109C Caution & Warning, White | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109C-CW-3 | A109C Caution & Warning, Yellow | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109C-CW-4 | A109C Caution & Warning, RED | Aviation Specialties Unlimited Inc | | 31 | Instruments | PMA |
| ASU-A109C-DMEHSI-1 | A109C Internal DME / HSI | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109C-HSI-1 | A109C Horizontal Situation Indicator | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-A109C-RMI-1 | A109C Bendix King NVIS Filter | Aviation Specialties Unlimited Inc | — | 33 | Avionics / Electrical | PMA |
| ASU-A109C-RMI2-1 | A109 RMI Filter #2 | Aviation Specialties Unlimited Inc | | 33 | Electromechanical | PMA |
| ASU-A109ENGR-1 | A109 Engine Instrument Round | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109HD-1 | A109 Hood Light Filter | Aviation Specialties Unlimited Inc | — | 33 | Electromechanical | PMA |
| ASU-A109HSI-5 | HSI A109 A Model | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A109MCMW-1 | A109 Master Caution/Warning Filter | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |
| ASU-A119EDU-1 | Engine Display Unit Filter | Aviation Specialties Unlimited Inc | | 31 | Avionics / Electronics | PMA |
| ASU-A119INST-1 | Instrument Filter | Aviation Specialties Unlimited Inc | | 33 | Avionics / Electrical | PMA |