# STC SA2-274

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installation of propeller spinner.
- Applied: September 3, 1959
- 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/sha256/85/7a/857ad8cb28d6f3586895e2f04ba9051e2321c2de994dd633e14bec274f6f2cf3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E2D17019F1BC4F6485256CC10083D469.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-274

## 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.

jStatrs (fflf .

of '(Krjmsporiation - Jfehcral ^Hatwn ^mmtstrattmt (Eerttftcate SA2-274 Signature Flight Support Corporation, a Delaware Corporation 7511 Lernmon Avenue, Hangar C Dallas, TX T5209 SR4 07 723 Lockheed 18 Civil Ait Installation of propeller spinner equipped with propeller hub 33D50 in accordance with Business Aircraft Corporation Drawing List SD603000-1E dated 10/04/65, or later FAA approved revision.

This STC is part of the basic H250 Tri-Gear modification.

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

asH/Me .-September 03, 1959 February 01, 1960 ; 12/21/98; 8/31/00 .-June 30, 1982 Rev. 10 (Signature) S. Frances Cox Manager, Special Certification Office, Southwest Region (Title) Any aJterJtJon of £Ma eurtitlctts is punishable by 9 flnt of not ing £1,000, or iptprlsuniffnt not exceeding 3 years, or FM Form 6110-2(10-68) Page 1 of 2 certificate oaf bf tranjfWred in accordance with F«i 21.47.

INS TRLCI IONS I he- transfer onilorsemi'm hclow may be used lo notify iht appropriate FAA Regional Office of ihr transfer of [his Supplemental Type Omhrate The FAA will reissue the rcrtifirale in ll«- name of ihe Iransferee and forward il lo him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) urnbt' aid If'fff t {City, State, and ?JP i from (Name of grantor) (Print or type) (Address of grantor) {.\vmbt* and street) (Cify.Slalr, and ^if lad,) Extent of Authority (if licensing agreement):.

Signature of grantor (In ink):

**C FAA AC 69-5536**

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/85/7a/857ad8cb28d6f3586895e2f04ba9051e2321c2de994dd633e14bec274f6f2cf3)

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