# STC SH1678SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: AlliedSignal Commercial Avionics Systems, United States
- Description: Installation of Bendix electronic flight system(EFIS-10).
- Status date: October 14, 1986
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H1NE](https://openairdocs.org/tcds/H1NE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/46A290991036E47485256CC2005C2EE8.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH1678SO

## ADs that name it (0)

None.

## Approved models (2)

- Sikorsky Aircraft Corporation S-76A ([TCDS H1NE](https://openairdocs.org/tcds/H1NE))
- Sikorsky Aircraft Corporation S-76B ([TCDS H1NE](https://openairdocs.org/tcds/H1NE))

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