# STC SA2-129

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Exhaust system revised.
- Applied: April 8, 1957
- Status date: August 31, 2000
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-723](https://openairdocs.org/tcds/A-723)
- Certificate PDF: https://openairdocs.org/files/sha256/99/db/99db8762956cd1ef15246c18c1c22ac761a7f4ccf038df74e75889477e28ab1b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D929B9B371988A7485256CC10083D439.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-129

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Martin Aeronautics Company 18 ([TCDS A-723](https://openairdocs.org/tcds/A-723))

## 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.

•Hmtri of tErimspnrtalttm - Jlfebfral ^fixation (Ahmitttstraium QLerttftcate SA2-129 Signature Flight Support Corporation, a Delaware Corporation 7511 Lernmon Avenue, Hangar C Dallas, TX 75209 723 Lockheed 18 Civil Air f f ff f^ d" Exhaust system revised in accordance with data listed on DAS Drawing List titled "Exhaust System Rework" Revision 2 dated 5/24/57.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

* asu/ Me .-April 08, 1957 June 24, 1957 '.•6/1/92; 12/21/98; 8/31/00 -12/5/68; 11/12/69;

2/23/72; 6/28/78; 1/27/81; 7/20/82 Rev. 6 (Signature) *fpf S. Frances Cox ' Manager, Special Certification Office, Southwest Region Any alteration of tMJ certificate 1* punishable tty d fine of not exceeding $1,000. of Imprisonment not exceeding 3 years, or both.

FAA Form B110-2(10-68) Page 1 of Z This certificate «ay be transferred In vtth FAR 21-47.

INSTRUCTIONS: The Transfer cmiursemem bHow may be used lo notify the appropriaie. FAA Regional Office of the rranslfr of ihis Supplrmrnia] Type Ceriihrair.

I he FAA wj]| reissue (hr 1 erufitate in the name of tJu- Trjnsfert'e and forward n lo him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street} , Stale, and ^IP cadt) from (Name of grantor) (Print or type) .

(Address of grantor) (JSumbrr and Il'tel) (City, Slate, am! ZIP code I Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

**C FAA AC B9-5536**

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/99/db/99db8762956cd1ef15246c18c1c22ac761a7f4ccf038df74e75889477e28ab1b)

---
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.