STC SA2531SW-D

Supplemental type certificate · American Airlines Inc

Holder
American Airlines Inc · United States
Status
Current · Amended
Status date
October 26, 1984
Applied
February 11, 1972
Product
Aircraft · Large Multi-Engine
Certification basis
Part 21
Data sheet
TCDSA22WE

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

Alteration of the altitude advisory system to deactivate the No. 2 system and to provide a visual warning signal from the No. 1 system to the alert light on the first officer's altimeter.

What the certificate saysOCR

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 Number SA2531SW-D This certificate issued to: American Airlines, Inc.

P. O. Box 61616 DFW Airport, Texas 75261 Part 91 of the Federal Aviation Regulations Original Product - Typebertificate Number: AZZWE Make: McDonnell Douglas Model: DC10-10 DC10-30 Description of Type Design Change:

Alteration of the Altitude Advisory System to deactivate the No. 2 System, and to provide a visual warning signal Trom the No. 1 System to the alert light on the First Officer's altimeter. American Airlines ECO's R.0772A, dated Feb. 14, 1972;

R.0772B, dated June 7, 1977; R.0772C, dated July 18, 1978; R.0772D, dated December 22, 1978; R.0772E, dated June 30, 1982; R.0772F, dated November 1, 1983; R.0772G, dated March 10, 1984; and R.0772H, dated July 11, 1984.

This approval should not be extended to other specific aircraft of this model on which other approved modifications are incorporated, unless it is determined that interrelationships between this change and any of those other previously incorporated approved modifications will introduce no adverse afffect upon the "irworthiness of that aircraft.

Date of Application: 2/11/72 Sale wissued:

Date of Issuance: 4/8/72 Date Amended: 12/16/17, 10/26/84 FEDERAL AVTATION By Direction of the Administrator a.P. Voellu A. P. Voeller (Signature) TMINISTRAIOD DAS-1SW Coordinator (Title) 47 FAA FORM 8110-2 (10-68)

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 & street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

ADs that name this STC · 0

An AD can apply because an STC is installed, or mention one in its text.

No AD in this release names this STC

Approved models · 2

MakeModelData sheet
The Boeing CompanyDC-10-10A22WE
The Boeing CompanyDC-10-30A22WE