# STC SA501EA-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: American Airlines Inc, United States
- Description: Delete of auxiliary vertical gyro
- Applied: April 24, 1967
- Status date: August 16, 1971
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/64/03/6403824c5aabb296e35a856307a66e9a1ca233b6637c9625fcf48a8f53b7c19a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7CA659534EF3210986257E6C00735203.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA501EA-D

## ADs that name it (0)

None.

## Approved models (5)

- The Boeing Company 727 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))
- The Boeing Company 727-100 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))
- The Boeing Company 727-100C Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))
- The Boeing Company 727-200 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))
- The Boeing Company 727C 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.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA501EA-D This certificate issued to: American Alriines, inc.

Maintenance & Engineering Center Tulsa, Oklahoma 74151 Part 4b of the CIV11 Air Regulations. (See I.C. Data Sheet ABWE) Original Product - TypeCertificate Number: ABWE Make: Boeing Model: See attached Master Eligibility List Description of Type Design Change: Number: SA501EA-D See Page 2.

Limitations and Conditions: The approval of this change in type design applies basically to the aircraft models listed on FAA Approved Master Eligibility List Number SA501EA-D and should not be extended to other specific models of those airplanes on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane.

Date of Application: Apr11 24, 1967 Date Reissued:

Date of Issuance: . Apr11 24, 1967 Date Amended: 7/11/67, 11/0/07, 4/30/60, 5/29/68 3/26/71, 4/23/71, 5/20/71 FEDERA! NIATION K, B. Olsen (Signature ) ADMINISTR DAS-IS Coordinator (Title)

47.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA5O1EA-D Description of Type Design Change:

1. Deletion of auxiliary vertical gyro in accordance with the following American Airlines documents:

A) ECO H.00950A dated 4/20/67 and ECO H.00950B dated 6/23/67 on Model 727-23.

B) ECO H.01062D dated 5/29/68 on Model 727-123.

C) ECO H.01885A dated 1/6/71 on Model 727-2A7.

D) ECO H.01849A dated 1/4/71 on Model 727-1A7C.

E) ECO H.01060F dated 5/28/71 on Model 727-35.

F) ECO H.01061D dated 12/3/68 on Model 727-95.

2. Installation is in accordance with the following FAA approved Airplane Flight Manual supplementary revisions:

A) AAL-11 to document D6.8727.3 dated 5/22/68 for Model 727-23.

B) AAL-2 to document D6.8727.49 dated 5/22/68 for Model 727-123.

C) AAI-1 to document D6.8728.52 dated 3/26/71 on Model 727-2A7.

D) AAL-1 to document D6.8727.52 dated 4/23/71 on Model 727-1A7C.

E) AAL-5 to document D6.8727.43 dated 5/22/68 on Model 727-35.

F) AAL-2 to document D6.8727.46 dated 5/22/68 on Model 727-95.

FAA FORM 8110-2-1 (10-69) PAGE 2 OF 2 PAGES Amended 3/26/71, 4/23/71, 5/28/71 8/16/71

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) Exent of Authority (if licensing agreement) :

Signature of grantor (In ink) :

## Every issue (1)

- August 16, 1971: Amended, Current. [certificate](https://openairdocs.org/files/sha256/64/03/6403824c5aabb296e35a856307a66e9a1ca233b6637c9625fcf48a8f53b7c19a)

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