# STC SA3975SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: American Airlines Inc, United States
- Description: Modify passenger main cabin interior configuration
- Applied: November 2, 1992
- Status date: May 14, 1993
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/60/37/6037f5a224fd7930eab33a6c524e87e1fa3563f776b886994732c7b7ffb189db
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/434960F82F34C01185256CC2000C5C2D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3975SW-D

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 727-200 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))

## What the certificate says

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

Ental States of 20 rica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA3975SW-D This certificate issued to: P.O. Box 582809 American Airlines, Inc.

MD208 Tulsa, OK 74158-2809 Certifies that the change in the type design for the following product with tho limitations word conditions thorefor as specified hereon meets the airvorthiness neguirements of Part. 4b. of the CIVIT Air Regulations:

Original Product - Type Certificate Number: ABWE Make: Boeing Model: 727-223, -227 Description of Type Design Change:

Modify the Passenger Main Cabin Interior Configuration for increased access to the Type III emergency exits per ECO H4268XX dated 4/8/93 and prototype Revision Forms 7721-4 dated 5/11/93 and 7721-3 dated 5/14/93 or later DAS1SW approved revision.

mistions opening not be incorporated in any aircraft of this specific mode until compatibility of this modification with previously approved modifications has been determined by the installer.

Date of Application: 11/2/92 Date Reissued:

Dato sf issuanco. 1/29/93 Date Amended: 5/14/93 Amendment 1 EDERAL AVIATION By Direction of the Administrator E. Grewe (Signature ) TANISPAT O DASISW Coordinator (Title)

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)

- May 14, 1993: Amended, Current. [certificate](https://openairdocs.org/files/sha256/60/37/6037f5a224fd7930eab33a6c524e87e1fa3563f776b886994732c7b7ffb189db)

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