# STC SA1405WE

- Type: Supplemental type certificate
- Status: Current, Surrendered
- Holder: United Air Lines Inc, United States
- Description: Structural installation of Dorne and Margolin DMC 33-2 Satcom VHF radio antenna.
- Applied: March 31, 1967
- Status date: June 6, 2009
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A25](https://openairdocs.org/tcds/4A25)
- Certificate PDF: https://openairdocs.org/files/sha256/5b/b2/5bb23dcb19f88764c2f42c200dec04f462edc61d647a4db339e4f52b0980e1ca
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D78755D2F60E47D0862577DC007272D0.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1405WE

## ADs that name it (0)

None.

## Approved models (9)

- McDonnell Douglas Corporation DC-8-21 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-31 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-32 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-33 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-51 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-52 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-53 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8F-54 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8F-55 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

Federal Aviation Agency Supplemental Type Certificate Number SAI 405WE on 6-26-2009 This certificate issued to: United Air Lines, Inc. a Fiance in cal toma 94120 San Francisco International Airport Maintenance Base San Francisco, California 94128 Part At of the StRESSESa Regulations.

Original Product - Type Tortificate Number: 4A25 Make: Douglas Aircraft Company, Inc.

Description of Type Design Change: Model: DC-8-21, -31, -32, -33, -51, -52, -53, and DC-8F-54 and DC-8F-55 Structural installation of a Dorne and Margolin DMC 33-2 Satcom VHF radio antenna in accordance with FAA sealed United Air Lines Report Number F-1156 as revised April 25, 1967.

This is a structural installation only and does not include the operational evaluation of the antenna or system. Prior to operational approval of this radio antenna installation, an operational evaluation must be conducted by the FAA.

Date of Application: March 31, 1967 Date Reissued:

Date of Issuance: April 27, 1967 Date Amended:

Pry direction of the Idministml UNITED SIATES OF Achug chief, Aircraft Bngineering Division

**FAA FORM 8110-2 (1-66) 0052-657-6000**

## Every issue (1)

- June 6, 2009: Surrendered, Current. [certificate](https://openairdocs.org/files/sha256/5b/b2/5bb23dcb19f88764c2f42c200dec04f462edc61d647a4db339e4f52b0980e1ca)

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