# STC SA2502SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: American Airlines Inc, United States
- Description: This modification directs a change in the cabin seating from an 8 first class/133 tourist class seating configuration to a 12 first class/ 128 tourist class seating configuration.
- Applied: August 12, 1988
- Status date: December 30, 2015
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/a7/9c/a79c748d46a9f8110b4d1281a18bcec9bdb6da4f8b321fdd32281f52c5a02516
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B081EB41AEC02D8086257F6B005AE660.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2502SO

## ADs that name it (0)

None.

## Approved models (2)

- 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))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

FAA Form 8110-2 (5/14) Page 1 of

Part of the

Signature

Title SA2502SO American Airlines, Inc.

3900 N. Mingo Road Engineering Dept., MD 208 Tulsa, Oklahoma 74116 Federal Aviation Regulations.

1. This modification directs a change in the cabin seating from an 8 first class/133 tourist class seating configuration to a 12 first class/ 128 tourist class seating configuration. The change is made in accordance with US Airways drawing 5M2540640, Revision "A", dated 1/25/99.

1. The installer must determine whether this design change is compatible with previously approved modifications.

2. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

Gaetano Sciortino Manager New York Aircraft Certification Office The Boeing Company DC-9-81 & DC-9-82 June 01, 1989, December 4, 2015, December 30, 2015 November 22, 1989, March 24, 1993, April 23, 1997, January 29, 1999 August 12, 1988 January 27, 1989 A6WE 2 “Reissued on December 4, 2015, to supersede the original STC, which has been lost or misplaced.”

FAA Form 8110-2 (5/14) Page 2 of

To (Name and address of transferee)

From (Name and address of grantor)

2 SA2502SO

## Every issue (2)

- December 30, 2015: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a7/9c/a79c748d46a9f8110b4d1281a18bcec9bdb6da4f8b321fdd32281f52c5a02516)
- December 4, 2015: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/3d/6f/3d6f15cc8d01ca44f926f313458bf023b2cbf88ba094b2211ad3b4c067bc62ce)

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