# STC ST109CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: ElectroSonics Div of AiRadio Corporation, United States
- Description: Installation of a Bendix/King TCAS II system.
- Status date: September 3, 1993
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3EU](https://openairdocs.org/tcds/A3EU)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/431E2DCA7E19928B85256CC300035F1C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST109CH

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company HS.125 Series 700B ([TCDS A3EU](https://openairdocs.org/tcds/A3EU))

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