# STC SA354WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: California Airmotive Corporation, United States
- Description: Observer's jump seat.
- Status date: January 1, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-763](https://openairdocs.org/tcds/A-763)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C74CF0C0B85A7507862570CF0053EBBA.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA354WE

## ADs that name it (0)

None.

## Approved models (3)

- Lockheed Aircraft Corporation 749-79 (C-121A) ([TCDS A-763](https://openairdocs.org/tcds/A-763))
- Lockheed Aircraft Corporation 749-79 (VC-121B) ([TCDS A-763](https://openairdocs.org/tcds/A-763))
- Lockheed Aircraft Corporation 749A-79 ([TCDS A-763](https://openairdocs.org/tcds/A-763))

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