# STC SA2211WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: United Airlines Inc, United States
- Description: Installation of Bendix Third Attitude Indicator to meet the requirements of 14 CFR 121.305(j)
- Applied: April 10, 1970
- Status date: November 30, 2011
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 121
- Data sheets: [TCDS 4A25](https://openairdocs.org/tcds/4A25)
- Certificate PDF: https://openairdocs.org/files/sha256/3e/b7/3eb7214ac2f5575326aa7f24f6750a1a84d7e28c2e7dc41fec2b62860192475f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D01B74452B0C16D28625799700577E68.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2211WE

## ADs that name it (0)

None.

## Approved models (8)

- The Boeing Company DC-8-21 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company DC-8-31 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company DC-8-33 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company DC-8-51 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company DC-8-52 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company DC-8-61 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company DC-8-62 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company DC-8F-54 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

This Certificate issued to United Air Lines, Inc.

600 Jefferson Street Houston, Texas 77002 Part 4b of the Civil Air Regulations.

4A25

Boeing

DC-8, -21, -31, -33, 51, 52, 54F, 61, 62 Description of Type Design Change: Installation of Bendix Third Attitude Indicator to meet the requirements of 14 CFR 121.305(j) in accordance with FAA Approved United Air Lines Engineering and Maintenance Report F-1456 Appendix “A” or later FAA approved revisions.

Installation of Bendix Third Attitude Indicator for Mode ls DC-8, -61, -62 to meet the requirements of 14 CFR 121.305(j) in accordance with FAA Approved United Air Lines Engineering and Maintenance Report F-1456 Appendix “A” and Appendix “C”, or later FAA approved revisions.

Limitations and Conditions: The approval of this change in type design applies basically to these models only. This approval should not be extended to other aircraft of these models on which other previously approved modifications are incorporated unless it is dete rmined by the installer that the interrelationship between this change and any of those other previ ously approved modifications will introduce no adverse effect upon the airworthiness of the aircraft. If th e holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Date of application: April 10, 1970

Date of issuance: July 27, 1970

Date reissued: November 30, 2011

Date amended: September 10, 1970;

November 25, 1975

( Signature) Haifa Haj-Eid Supervisor, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office (Title)

NOTE:

**DO NOT DELETE THIS PAGE.**

**DO NOT ADD ANY DATA TO THIS PAGE.**

**THIS PAGE IS FOR PAGE NUMBERING PURPOSES, PLEASE DISCARD PRINTED COPY.**

## Every issue (1)

- November 30, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/3e/b7/3eb7214ac2f5575326aa7f24f6750a1a84d7e28c2e7dc41fec2b62860192475f)

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