# STC SH170WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Lear Avia Corporation, United States
- Description: Installation of exhaust muffler assembly.
- Status date: September 13, 1974
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS 2H3](https://openairdocs.org/tcds/2H3)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CE0D891D57AA7B0C85256CC2005C2EEF.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH170WE

## ADs that name it (0)

None.

## Approved models (4)

- Bell Helicopter Textron 47G-2A ([TCDS 2H3](https://openairdocs.org/tcds/2H3))
- Bell Helicopter Textron 47G-2A-1 ([TCDS 2H3](https://openairdocs.org/tcds/2H3))
- Bell Helicopter Textron 47G-5 ([TCDS 2H3](https://openairdocs.org/tcds/2H3))
- Bell Helicopter Textron 47G-5A ([TCDS 2H3](https://openairdocs.org/tcds/2H3))

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