# STC SA1224WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Rockwell Collins Inc, United States
- Description: Installation of dual Collins FD-109 Flight Director Systems, dual Collins low range radio altimeters, wiring provision for Collins 54W-IC, comparator warning system No. 2 ITT AFN 3544 DME, and navigation switching.
- Status date: March 5, 1998
- 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/CEDFE633F4D113AF85256CC10080E04B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1224WE

## 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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