# STC SH1561SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Sikorsky Aircraft, United States
- Description: Installation of the King Gold Crown III KDF 806 automatic direction finder (System #2).
- Status date: May 29, 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/34595F70DFA8926985256CC2005C2EBA.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH1561SO

## 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))

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.