# STC SA556CE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Trans World Airlines Inc, United States
- Description: Installation of auto-thrust provisions. (707-124)
- Status date: March 19, 1969
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A21](https://openairdocs.org/tcds/4A21)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/53A9FF246B71C05485256CC2001229F7.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA556CE

## ADs that name it (0)

None.

## Approved models (1)

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

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