# STC SH1871SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Sikorsky Aircraft, United States
- Description: Installation of King KDM-706A (copilots) distance measuring equipment.
- Status date: August 16, 1991
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H1NE](https://openairdocs.org/tcds/H1NE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0FD75BE56F587E1A85256CC2005C2F34.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH1871SO

## ADs that name it (0)

None.

## Approved models (3)

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

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