# STC SA561EA-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: American Airlines Inc, United States
- Description: Installation of automatic throttle/ speed control system.
- Applied: July 16, 1969
- Status date: March 2, 1970
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 4A26](https://openairdocs.org/tcds/4A26)
- Certificate PDF: https://openairdocs.org/files/sha256/15/47/154789258cf472c9a75e22fb688fcf78b9a833eda0f20795503febe2ca20a036
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1458D407DFE4309C85256CC200122A3B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA561EA-D

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 707-300B 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.

Anital Stares of Crain Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA561ZA-D This certificate issued to: American Airlines, Inc.

Maintenance & Engineering Center Tulsa, Oklahoma 74151 Part 4b of the Civil Ai:

Regulationa.

Eniginal Pritect-Type bertificute Number: 4A26 Make: Boeing Model: 707-3233 Description of Type Design Change:

Installation of an Autoratic Throttle/Speed Control System provisions in accordance with ECO B.03428F, B.03483B and B.034830 on one Boeing 707-3238, Regiatration Number N8440, Serial Number 20179.

limitatiniundkindilund: This approval should not be extended to other specific sirplanes of these models on which other previousiy approved nodifications aze incorporated unless it is determined that the interrelatlonsbip between the change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. Tris systen is approved for installation on aircraft Registration Number NEVO, aircraft S/N 20179 oniy.

7/16/69 Date Reissued:

Date of Issuance: 11/14/69 Date Amended: 3/2/10 C. I. Richmond (Sigratare) YON DASIRA Coordinator 1 ry alteraton oj ble by e fine of rot exceeding $1,000, or imprisonment rot exceeing 3 pears, or bull This certificate may be transferred in autordant with PAR 2 FAA FORM 3110-2 (10-63)

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)

- March 2, 1970: Amended, Current. [certificate](https://openairdocs.org/files/sha256/15/47/154789258cf472c9a75e22fb688fcf78b9a833eda0f20795503febe2ca20a036)

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