# STC SA30SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Riddle Airlines Inc, United States
- Description: Two emergency exits at stations437.9 - 460.5 from Type IV to Type III modified.
- Status date: January 1, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A10](https://openairdocs.org/tcds/4A10)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/634CEE386FFB47BC862570CB005A0485.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA30SO

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-7 Series ([TCDS 4A10](https://openairdocs.org/tcds/4A10))

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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.