# STC SA1815SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Gulfstream Aerospace Corporation, United States
- Description: Installation of AiResearch TPE331-1-151 engine.
- Status date: June 26, 2001
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A4](https://openairdocs.org/tcds/2A4)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DAF1E5659C8430C785256CC10083D108.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1815SW

## ADs that name it (0)

None.

## Approved models (3)

- Twin Commander Aircraft Corporation 680V ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft Corporation 680W ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft Corporation 681 ([TCDS 2A4](https://openairdocs.org/tcds/2A4))

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