# STC SA74SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Riley Turbostream Corp, United States
- Description: Installation of seats and camera port.
- Status date: September 10, 1974
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A10](https://openairdocs.org/tcds/3A10)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F99973051824D3C885256CC20056A374.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA74SO

## ADs that name it (0)

None.

## Approved models (5)

- The Cessna Aircraft Company 310 ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- The Cessna Aircraft Company 310B ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- The Cessna Aircraft Company 310C ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- The Cessna Aircraft Company 310P ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- The Cessna Aircraft Company 310Q ([TCDS 3A10](https://openairdocs.org/tcds/3A10))

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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.