# STC SA4-389

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Northwest Airlines Inc., United States
- Description: Installation of cabin emergency lighting.
- Applied: October 31, 1957
- Status date: November 14, 1986
- Product: Aircraft, Large Multi-Engine
- Data sheets: [TCDS A-669](https://openairdocs.org/tcds/A-669)
- Certificate PDF: https://openairdocs.org/files/sha256/3c/84/3c841621069c1119651a2800210050e392d7a217f85d1219ff9b21c444dff693
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID185130152520260715183615.0001
- DRS record last changed: July 15, 2026
- Page: https://openairdocs.org/stc/SA4-389

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-3C Series ([TCDS A-669](https://openairdocs.org/tcds/A-669))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate REISSUED TO REPLACE ORIGINAL, WHICH WAS REPORTED LOST.

Number: SA4-389 This certificate issued to: Northwest Airlines, Inc.

2700 Lone Oak Parkway Eagan, MN 55124 Purt 4B of the CIVil Air Pegulations. and 40.173.

Original Product -Typebortificate Number: 669 Make: Douglas Model: DC3C 20g ation of Cour hergency Lighting per West Coast Arines Drawing to.

This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane.

Tales/application: October 31, 1957 Date Reissued: October 13 November 14, 1986 1982 Date of Issuance: . January 27, 1958 Fate unended:

EDERAL AVIATION han dira from dith

w. F. Horn ( Signature ) OMINIS TRATIO ACE-115C, Central ral Region, FAlfication Office, (Title )

**FAA FOR 8110-2 (10-68)**

## Every issue (1)

- November 14, 1986: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/3c/84/3c841621069c1119651a2800210050e392d7a217f85d1219ff9b21c444dff693)

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