# STC SA4149WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Northern 3 LLC, United States
- Description: Installation of a flap and landing gear aural warning system.
- Status date: August 1, 2002
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 6A2](https://openairdocs.org/tcds/6A2)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E17F8B7AC9D7466885256CC2000E39DE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4149WE

## ADs that name it (0)

None.

## Approved models (3)

- McDonnell Douglas Corporation R4D-8 ([TCDS 6A2](https://openairdocs.org/tcds/6A2))
- McDonnell Douglas Corporation R4D-8Z ([TCDS 6A2](https://openairdocs.org/tcds/6A2))
- McDonnell Douglas Corporation Super DC-3 ([TCDS 6A2](https://openairdocs.org/tcds/6A2))

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