# STC SA2741WE-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: United Airlines Inc, United States
- Description: Installation of equipment to provide guidance to flight director and SP-30AL autopilot to conduct two-segment approaches.
- Applied: September 18, 1973
- Status date: November 30, 2011
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A25](https://openairdocs.org/tcds/4A25)
- Certificate PDF: https://openairdocs.org/files/sha256/7b/e2/7be23bf56daaef5b4a45aca1728c8d776b77a67aaeb370b26375cad7de31b01d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/197D47E15E6F91F58625799E0071AE96.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2741WE-D

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company DC-8-61 ([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. dated December 31, 1953 Original Product Type Certificate Number :

4A25

Boeing

DC-8-61, S/N 46066 only Description of Type Design Change: Installation of equipment in accordance with United Air Lines Engineering Report F-1665, Revision A, dated March 20, 1974. This modification provides guidance to the Flight Director and SP-30AL Autopilot to conduct two-segment approachesLimitations and Conditions: United Air Lines supplementary revision dated April 7, 1974, to FAA Approved AFM Document DAC-33161 is require d with this modification. The approval of this type design applies to Boeing model DC-8-61 airplane, S/N 46066 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: September 18, 1973

Date of issuance: November 23, 1973

Date reissued: November 30, 2011

Date amended: April 7, 1974

( 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/sha256/7b/e2/7be23bf56daaef5b4a45aca1728c8d776b77a67aaeb370b26375cad7de31b01d)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.