# STC SA3051SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Honeywell International Inc, United States
- Description: Installation of a TRA-67 Mode S transponder system.
- Applied: July 29, 1991
- Status date: January 19, 2022
- Product: Aircraft, Large Airplane
- Certification basis: Part 21, Part 21, Part 21, Part 21, Part 21, Part 21, Part 21, Part 25
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE)
- Certificate PDF: https://openairdocs.org/files/sha256/fb/e0/fbe0f9fd01a3ca3af033499958bfd5d084aee34d51a2bc03713830f4907eb984
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171882950720221201203800.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3051SO

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 747-300 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))

## 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.

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

SA3051SO Honeywell International Inc.

21111 N 19th Ave Phoenix, Arizona 85027 Part 25 the Federal Aviation Regulations A20WE Boeing 747-300 Series Installation of a TRA-67 Mode "S" transponder system in accordance with AlliedSignal Master Drawing List No. 699-50018, Revision E, dated October 8, 1999, or later FAA approved revision.

This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this change and any other previously approved modifications will produce no adverse effect upon the airworthiness of that airplane.

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.

July 29, 1991 February 24, 2000; January 19, 2022 October 31, 1991 November 20, 1991 For Acting Manager, Seattle ACO Branch 2

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

SA3051SO 2

## Every issue (2)

- January 19, 2022: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/fb/e0/fbe0f9fd01a3ca3af033499958bfd5d084aee34d51a2bc03713830f4907eb984)
- January 19, 2022: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/9f/29/9f29f6f42a518dbe8f43aa337d56c46905184cb44ab1aaced392d28fc0b53728)

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