# STC SA3927SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: American Airlines Inc, United States
- Description: Install floor proximity emergency path markings.
- Applied: August 6, 1986
- Status date: April 30, 1987
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A22WE](https://openairdocs.org/tcds/A22WE)
- Certificate PDF: https://openairdocs.org/files/sha256/01/e6/01e617132a19215dca4362d78c2c1d61770b975c1731672776c4906e76852aef
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EC5C77D5CE5B018D85256CC2000C5BA9.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3927SW-D

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company DC-10-30 ([TCDS A22WE](https://openairdocs.org/tcds/A22WE))

## 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 NumberSA3927 SW-D This certificate issued to: 1e Maintenance & Engineering Center American Airlines, Inc.

Tulsa, Oklahome, 74151 Purt 25 of thederal Aviation Hegulations.

Original Product - Type Prentificate Number A22WE MakeMcDonnell Douglas Model DC 10-30 Description of Type Design Change:

Install floor proximity emergency path markings in compliance with FAR Amendments 25-58 and 121-183 per ECO R3569. Amend STC by replacing floor proximity lighting control module per ECO R3569B.

This approval should not be incorporated in any aircraft of this specific model on which other approved modifications are incorporated, unless it is determined that interrelationships between this change and any of those other previously incorporated approved modifications will introduce no adverse affect upon the airworthiness of that aircraft.

Date of Application: 8/6/86 Date Reissued:

Date of Issuance: . 8/23/86 Date Amended: 4-30-87 FEDERAL AVIATION by divetion of the dorinistraton . P. Voeller allaelk (Signature) TAMINI STRAIG DAS-1SW Coordinator (Title)

47.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code )

• from (Name of grantor) (Print or type) - (Address of grantor) (Number and street) (City, State, and ZIP code ) Extent of Authority (if licensing agreement):

Signature of grantor (In ink): _

## Every issue (1)

- April 30, 1987: Amended, Current. [certificate](https://openairdocs.org/files/sha256/01/e6/01e617132a19215dca4362d78c2c1d61770b975c1731672776c4906e76852aef)

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