# STC SA3921SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: American Airlines Inc, United States
- Description: Installation of modified galley units.
- Applied: August 1, 1986
- Status date: August 1, 1986
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/0e/55/0e55a3a7b701efafb4cad6f336a10a19c026631ea5c8b1c5ed0a69cb571e5ebb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2BD8B1B90570034985256CC2000C5B9C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3921SW-D

## ADs that name it (0)

None.

## Approved models (4)

- The Boeing Company DC-9-81 (MD-81) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-82 (MD-82) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-83 (MD-83) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-87 (MD-87) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

## 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 Numberi SA3921SW-D This certificate issued to: p. O. BOX 51009 American Airlines, Inc.

Engineering Department, MD208 Tulsa, OK 74151 Part 25 of the Federal Aviation Regulations.

Original Product - Type bertificate Numben: AGWE Make: McDonnell-Douglas Model: DC9-80 Description of Type Design Change:

Installation of modified galley units in accordance with AA ECO K1088AX and-K1088BX and FAR 25.

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 the interrelationship between this change and any of those previously incorporated approved modifications will not introduce any adverse affect upon the airworthiness of the aircraft.

Date of Application: v: 8/1/86 Date Reissued:

Date of iss 8/1/86 Date Amended: .

AVIATIO By Direction of the Administrator OMINISTRA Coordinator, DAS 1SW (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, Stale, and ZIP code ) Extent of Authority (if licensing agreement):

Date of Transfer: - Signature of grantor (In ink): -

## Every issue (1)

- August 1, 1986: Issued, Current. [certificate](https://openairdocs.org/files/sha256/0e/55/0e55a3a7b701efafb4cad6f336a10a19c026631ea5c8b1c5ed0a69cb571e5ebb)

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