# STC SA2-351

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installation of unfeathering system.
- Applied: September 10, 1958
- Status date: August 31, 2000
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-757](https://openairdocs.org/tcds/A-757), [TCDS A-765](https://openairdocs.org/tcds/A-765)
- Certificate PDF: https://openairdocs.org/files/sha256/c8/a5/c8a52c8f2554e835f54b3c72758c419f9ac3c5a0f335eba29a62d669b5cf27c8
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9455F1505195BD1C85256CC10083D47D.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-351

## ADs that name it (0)

None.

## Approved models (2)

- Beechcraft Corporation C18S ([TCDS A-757](https://openairdocs.org/tcds/A-757))
- Beechcraft Corporation D18S ([TCDS A-765](https://openairdocs.org/tcds/A-765))

## 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.

•IHmieb ^tatts <©£ rrf tftranspnrtaitoit - upplemental (Certificate SA2-351 Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 aife&. Ms fyfdrff Civil Ai r 757, 765 Beech D18S, C185 'I <1CL..

Installation of unfeathering system in accordance with data listed, on Dallas Aero Service Drawing List titled "Unfeathering System D-18" Revision 2 dated 10/14/58.

Dallas Aero Service CAA Approved Supplementary Log of Revisions dated 9/29/58 is required.

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

s? t&e/a- a/ywocxreArtaff fwnatst tn.

.-September 10, 1958 October 13, 1958 .-e/15/92; 12/21/98; 8/31/00 22, 1982 Rev. 5 (Signature) S. Frances Cox Manager, Special Certification Office, Southwest Region iTItle) Any Jjteratlon of this certjficjt* Is punishable by e tine of not eKceedlnq Sl.QQQ, Of InprLsonKftt not e*rc*eding 3 yejra, or rono 8110-2(10-68] Pag» 1 of 2 certiflcatv arfly be tcansfscrfd in Accordance vi Cn FAff 21.47,

INSTRUCTIONS1 The iransfcr endorsement be law may be used lo notify the appropriate FAA Regional Office of I he transfer of this Supple-mental Type CcrnfUaie.

The l-'AA will reissue the rrriificale in ihe name ol [he transferee and forward ii to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of Iransjfrff) t .\umber and ttretf) (Cify.Statt. and ?JP todi) from (JVamt of grantor) (Print or type) (Address of grantor) and itrtet) (City, Stair, anil ^IP todr) Extent of Authority (if licensing agreement):

Signature of grantor (In ink);

**C FAA AC B9-553B**

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c8/a5/c8a52c8f2554e835f54b3c72758c419f9ac3c5a0f335eba29a62d669b5cf27c8)

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