# STC SA204CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Wipaire Inc, United States
- Description: Replacement of P&W PT6A-20 aircraft engine with P&W PT6A-27 or PT6A-28 aircraft engine and Hartzell propeller model HC-B3TN-3/T10173 or HC-B3TN-3/T10282.
- Status date: May 23, 1994
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-806](https://openairdocs.org/tcds/A-806)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4C9B2E6F92202CFE85256CC10083D59D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA204CH

## ADs that name it (0)

None.

## Approved models (1)

- de Havilland Inc. (Canada) DHC-2 (L-20A) MK.III ([TCDS A-806](https://openairdocs.org/tcds/A-806))

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