# STC ST116CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: ElectroSonics Div of AiRadio Corporation, United States
- Description: Installation of a Bendix/King EFS-50 electronic flight instrument system (EFIS).
- Status date: September 27, 1993
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A22CE](https://openairdocs.org/tcds/A22CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EEB25983EADBD49A85256CC300035F23.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST116CH

## ADs that name it (0)

None.

## Approved models (3)

- The Cessna Aircraft Company 500 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE))
- The Cessna Aircraft Company 550 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE))
- The Cessna Aircraft Company S550 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE))

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.