# STC SA1033WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: United Airlines Inc, United States
- Description: Installation of either single or dual Collins AL-101 Radio Altimeter System(s) in accordance with FAA Approved United Air Lines Report Nos. F-1038 and No. F-1054.
- Applied: October 25, 1965
- 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/sha256/73/cc/73cc8df6b2c6aec7b033b4de5fb3baf5a8910cf39fed055676605a7330ec222c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4ABA6827FEBC080786257992005F0FBB.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1033WE

## ADs that name it (0)

None.

## Approved models (9)

- 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-8-32 ([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-8-53 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company DC-8-55 ([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.

Original Product Type Certificate Number : 4A25 Make: Boeing Model: DC-8-21, DC-8-31, DC-8-32, DC-8-33, DC-8-51, DC-8-52, DC-8-53, DC-8F-54, DC-8-55 Description of Type Design Change: Installation of either single or dual Collins AL-101 Radio Altimeter System(s) in accordance with FAA Approved United Air Lines Report Nos. F-1038 and No. F-1054.

Limitations and Conditions : This approval should not be extended to ot her aircraft of this model 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 aircraft. The DC-8-51, -52, -53, DC-8F-54, and DC-8F-55 aircra ft which have the Douglas wiring & installation provisions for the dual Sperry radio a ltimeter system only. The approval of this change in type design is in accordance with UAL Report F-1054 and applies basically to the DC-8-51, -52, -53, -21, -31, -33, DC-8F-54 & DC-8F-55 which do not have previous altimeter system wiring. A copy of this STC must be included in the permanent records of the modified aircraft. If the 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.

Date of application : October 25, 1965

Date of issuance : August 19, 1965

Date reissued : November 30, 2011

Date amended : September 14, 1965; October 13, 1965;

August 9, 1966; October 31, 1975; November 19, 1975

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

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)

Signature of grantor (In ink):

U.S. GPO 1987-763-28

## Every issue (1)

- November 30, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/73/cc/73cc8df6b2c6aec7b033b4de5fb3baf5a8910cf39fed055676605a7330ec222c)

---
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.