# STC SA2-26

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installed 3/8 O.D. line from RH propeller governor pad on RH engine to LH propeller pad on LH engine.
- Status date: August 31, 2000
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A4](https://openairdocs.org/tcds/2A4), [TCDS 6A1](https://openairdocs.org/tcds/6A1)
- Certificate PDF: https://openairdocs.org/files/sha256/6b/f1/6bf1150b69f1d778c774b0dc544d00a1781f27fabcf4558739f340ee42e9f130
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4FB006325AF9C85C85256CC10083D466.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-26

## ADs that name it (0)

None.

## Approved models (2)

- Twin Commander Aircraft Corporation 560-A ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft Corporation 680 ([TCDS 2A4](https://openairdocs.org/tcds/2A4))

## 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.

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JBepartmmt of fJEriittspDirtathm - JJjfhrral ,A&raium ^hmmtstratton upplemml&l (Certificate SA2-26 Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 fepea*<eftHrt& 6A1 , 2A4 Gulf stream American Civil Ai r 560A, 680 Installed 3/8 O.D. line from RH propeller governor pad on RH engine to LH propeller pad on LH engine with 2 each 15740 electric operated solenoid valves for unfeathering feathered engine with running engine per Dallas Aero Service Drawing A109001-1, -2, and -3.

Dallas Aero Service, Log of Revisions, Rev. 1, page 11A dated 9/16/56, is required.

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

.-September 18, 1956 November 01, 1956 6/1/92; 12/21/98; 8/31/00 .- 12/5/68; 11/12/69;

2/23/72; 5/26/78; 7/11/79; 4/10/81;

3/2/82 Rev. 6 (Signature) S. Frances Cox Manager, Special Certification Office, Southwest Region

FAA Form 6110^2 PAQ* 1 of 2 c*rtlflctfte awy fce transferred in accordance wltn FAR 21.47-

INSTRUCTIONS, ['he transfer endorsement helow may he used 10 notify the .ippropriate FAA Regional Office of ihe transfer of this Supplemental Type Ceriifu;nt.

The FAA v,ill reissue thr renificatt- in ihr name of thr transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number .

to (Name of transferee) (Address of transferee) and i (City, Statr, and £1P lode) from (Name of grantor) (Print or type) (Address of grantor) (Number and tfrtel f { City, Slott. and 2JP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

C FAA AC ea-5538

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/6b/f1/6bf1150b69f1d778c774b0dc544d00a1781f27fabcf4558739f340ee42e9f130)

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