# STC SA2-307

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installation of exhaust trough and short stack using standard nacelle.
- Applied: January 26, 1960
- 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/sha256/70/f5/70f51340db2d2f4affb78a50883a10a4ce575231e948e0f7a5e5a94cdf22cad6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8C7507EEBBC0F07385256CC10083D472.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-307

## 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.

JHniteb jStatts Of uf ^ransportatmn - ,3feJteraI ^fauttinn Certificate SA2-307 signature Plight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 723 Lockheed 18 Civil Air Installation of exhaust trough and short stack using standard nacelle in accordance with data listed on Dallas Aero Service Drawing List dated 1/26/60, or later FAA approved revision. ._ . --—— Compatibility of this modification with other previously approved modifications must be determined by the installer. , .... . v... .

'atf Cf favnfftaS-een ataSe i& .• January 26, 1960 March 14, 1960 ; 12/21/98; 8/31/00 .•June 30, 1982 Rev. 6 (Signature) S. Frances Cox Manager, Special Certification Office, Southwest Region (Titte) Any Jjteratlan of thjj c*ftifjcjte lj punlsheble by a fine of not lng £J,OPO, or imprisonment not exceeding 3 years, or both.

Form B110-2 (10-681 Psg« 1 of 2 certificate D*y b* trjnjf»rr*d Jn accordance ultti FAK 21.97-

INSTRUCTIONS. The transfer endorsement brlow may be used !o nolify ill.- appropriate FAA Regional Office of I he transfer of this Supplemental Type Certificate.

Thr FAA will reissue the- rrrtificatc m the name ol the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transjeree) (Address of transferee) f Number and iTreet) (City. Stale, a from (Name of grantor) (Print or type) (Address of grantor) (Number anil ittfetf (City, Stair, and ^If <otii) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

**C FAA AC 69-5S3B**

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/70/f5/70f51340db2d2f4affb78a50883a10a4ce575231e948e0f7a5e5a94cdf22cad6)

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