# STC SA1-355

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Chamberlain Aviation Inc, United States
- Description: Increase to 9,000 lbs. gross weight and 450 hp.
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-765](https://openairdocs.org/tcds/A-765)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D67BC430BF9FFE0F85256CC1007F3C09.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1-355

## ADs that name it (0)

None.

## Approved models (2)

- Raytheon Aircraft Company 18 Series ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Raytheon Aircraft Company C-45 Series ([TCDS A-765](https://openairdocs.org/tcds/A-765))

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