# STC SA40SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: A & H Aircraft Parts Inc, United States
- Description: Main entrance door and cabin window relocated and fuselage station 9A bulkhead web removed.
- Status date: January 1, 1960
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-757](https://openairdocs.org/tcds/A-757)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0E8B126EEA6AEE8C862570D0007BADAC.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA40SO

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company C18 Series ([TCDS A-757](https://openairdocs.org/tcds/A-757))

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