# STC SH1074SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Aircraft Equipment Certification Corporation, United States
- Description: Installation of an electric rotor engage system with engage and disengage indicators.
- Status date: September 6, 1979
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H1CE](https://openairdocs.org/tcds/H1CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5B52A3B63CBB4F0685256CC2005C2E01.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH1074SO

## ADs that name it (0)

None.

## Approved models (1)

- The Enstrom Helicopter Corporation F-28A ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))

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