# STC SA401EA-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: American Airlines Inc, United States
- Description: Installation of door mounted evacuation slides
- Applied: October 25, 1966
- Status date: May 1, 1975
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 4A21](https://openairdocs.org/tcds/4A21), [TCDS 4A26](https://openairdocs.org/tcds/4A26)
- Certificate PDF: https://openairdocs.org/files/sha256/ee/8b/ee8b8dcdaccffdc135b27e047515c2f210a99f665fcad5f5d2a1c57087035bc5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C2C7BA931F68E28386257DF90079A888.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA401EA-D

## ADs that name it (0)

None.

## Approved models (4)

- The Boeing Company 707-100B Long Body ([TCDS 4A21](https://openairdocs.org/tcds/4A21))
- The Boeing Company 707-100B Short Body ([TCDS 4A21](https://openairdocs.org/tcds/4A21))
- The Boeing Company 707-300B Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26))
- The Boeing Company 707-300C Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26))

## What the certificate says

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

Janited Steres of Simrica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SAÇOTEA-D This certificate issued to: American Airlines, inc:

Maintenance & Engineering Center Tulsa, Oklahoma 74151 Certifies that the change in the type design for the fattoving product with the timitatiors a nd conditions.

therefor as specified heven meets the airuarthiness requirements if Purt 25 sf the Federal Aviation Regulations.

Original Product . Type bertificate Number: 4A21 4A26 Make: Boeit! Loeing Model: 707-123B 707-323B 707-138P 707-323C Description of Type Design Change:

1) On the 707-1238, installation of door mounted evacuation slides on the forvard and aft entry doors and the forward and aft galley service doors per American Airlines Lngineering Change Order B.01075 Rev. D dated Sept. 15, 1966, and Encincering Change Order B.01975 Rev. G dated March 21, 1967. 2) On the 707-323, installation of door mounted evacuation slide on the forvard galley service door per Enginecring Change Order D.02840 Rev. D dated March 3, 1969, and Enginecring Change Order E.02340 Rev. E dated April 10, 1969. The fud and aft entry doors and the aft galley service dogr are the same as in paragraph 1) above.

Limitations and Conditions: See Continuation Sheet Po.l of 1 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 effect upon

Date of Application: October 25, 1966 Date Reissued:

Nov. 25,1966; Jan. 17,1967; March 17, Date of Issuance: October ?7, 1966 Date Amended: 1967; April 17,1967 ;March 17, 1969;

Sept. 30,1069; May 1, 1975 EDER: Dy direction ef the Saministraten PETRIE (Signature ) ADMINIST ATIO B.O.Plakestad Coordinator DAS ISU (Title) Any alleration of this : picate is punishable by a fine of not exceding B1,000, or imprisonment not exceeding 3 years, or both

**FAX FORM 8110-2 (10-68)**

Lnited Stotes of Gincrira Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SAAMEA-D Amended May 1, 1975 Description of Type Design Change: (Continued)

3) On the 707-138B, installation of the door-mounted evacuation slide on all doors is per American Airlines' Engineering Change Urder S B:4364 dated March 27, 1975, and P.4364 Rev. A dated Hay 6, 1975.

NOTE: ECO B.4364 and B.4364 Rev. A incorporated the information of B.1975,all applicable revisions, into a new release number for convenience only. All pertinent. data is the same as on both ECOS B.1975 and P.4364.

47.

PAGE l OF l PAGES

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and Z1P code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and Z1P code) Exent of Authority (if licensing agreement) :

Signature of grantor (In ink) : .....

## Every issue (1)

- May 1, 1975: Amended, Current. [certificate](https://openairdocs.org/files/sha256/ee/8b/ee8b8dcdaccffdc135b27e047515c2f210a99f665fcad5f5d2a1c57087035bc5)

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