# STC SA3307SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Aero Design Services, Inc, United States
- Description: Modification of interior configuration to 0 first class, 205 tourist class.
- Status date: September 8, 1992
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/889AD042BC2E5DAF85256CC2000A96A5.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3307SO

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 757-200 ([TCDS A2NM](https://openairdocs.org/tcds/A2NM))

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