# STC SA2-316

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installation of flush loop antenna.
- Applied: May 27, 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/sha256/01/4b/014bea497f293ad923065cd8c2f741618cb0de2ad6fb6f9ca8e611be38e48666
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C8BF50017FA55E0A85256CC10083D475.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-316

## 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

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number 5A2-316 This certificate issued to: Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 Part SRA07 of the Civi1 Air Foegulations.

Original Product Type Certificate Number: 723 Make: Lockheed Model: 18 Description of Type Design Change:

Installation of flush loop antenna in accordance with Howard Aero, Inc. Drawing No. 1156 dated May 3, 1957, or later FAR approved revision.

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

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

Date of Application: May 27, 1957 Date Reissued: 6/15/92; 12/21/98; 8/31/00 Date of Issuance: November 22, 1957 Date Amended: June 30, 1982 Rev. 9 FEDERAL AVIATION By Direction of the Administrator TOMNISTRATO fols. Frances Cox Manager, Special Certification Office, Southwest Region (Title)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and 21P code ) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ZIP code ) Extent of Authority (if licensing agreement): - Date of Transfer: - Signature of grantor (In ink):

**FAA AC 69-5536**

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/01/4b/014bea497f293ad923065cd8c2f741618cb0de2ad6fb6f9ca8e611be38e48666)

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