# STC SA4009WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: AiResearch Aivation Service Co, United States
- Description: Installation of Collins APS-80 autopilot.
- Status date: August 9, 1979
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3EU](https://openairdocs.org/tcds/A3EU)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5594FEA0E7FC932485256CC2000C6019.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4009WE

## ADs that name it (0)

None.

## Approved models (2)

- Raytheon Aircraft Company BH.125 Series 400A ([TCDS A3EU](https://openairdocs.org/tcds/A3EU))
- Raytheon Aircraft Company DH.125 Series 400A ([TCDS A3EU](https://openairdocs.org/tcds/A3EU))

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