# STC SA1-170

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Reading Avn Svc Inc, United States
- Description: Antenna support structure and component trays for RCA AVQ-50 and Bendix RDR-1D radar system.
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-669](https://openairdocs.org/tcds/A-669)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C2F968FDF44CA7EC85256CC1007F3BA5.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1-170

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-3 Series ([TCDS A-669](https://openairdocs.org/tcds/A-669))

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