# STC SA2679WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: United Airlines Inc, United States
- Description: Installation of equipment
- Applied: March 13, 1972
- Status date: November 30, 2011
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/5a/a1/5aa1a7718f7cb8a2c86c2905ce280b2f786628ac1e2588031d94de45770fe729
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/22321CABC61101C18625799900701084.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2679WE

## ADs that name it (0)

None.

## Approved models (1)

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

## 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.

(See Type Certificate Data Sheet No. A3WE.)

A3WE

Boeing

727-222, S/N 19913 only Description of Type Design Change : Installation of equipment in accordance with United Air Lines Change Order Authorization – (COA) No. 7-2331, with E ngineering Releases – (ER) 15 and 18 thru 23, and Engineering Variation Authority – (EVA) A46- 661, A46-664, A46-666 thru A46-674 and A48-565 to provide vertical guidance to the flight director a nd the SP-50 autopilot to conduct two-segment approaches.

United Air Lines Supplementary Revision Number 5 to FAA Approved AFM Document D6-8728.1 is required with this modification.

Limitations and Conditions: The approval of this type design applies to Boeing Model 727-222 airplane, Serial Number 19913 only.

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: March 13, 1973

Date of issuance: April 26, 1973

Date reissued: November 30, 2011

( 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/sha256/5a/a1/5aa1a7718f7cb8a2c86c2905ce280b2f786628ac1e2588031d94de45770fe729)

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