# STC SA349EA

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Lockheed Aircraft Service Co, United States
- Description: Oxygen system.
- Status date: March 20, 1974
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A21](https://openairdocs.org/tcds/4A21), [TCDS 4A26](https://openairdocs.org/tcds/4A26)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7CD78FF350FFE29C85256CC2000A98AE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA349EA

## ADs that name it (0)

None.

## Approved models (2)

- The Boeing Company 707 Series ([TCDS 4A21](https://openairdocs.org/tcds/4A21))
- The Boeing Company 707 Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26))

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