# STC SA2-518

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installation of 'Two Shot C02 System Installation.'
- Applied: March 10, 1958
- 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/sha256/9c/48/9c48d803fc1cdb6fe0ff4bd6063a77191b57d4db2421a9408f9e40061cf15709
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/25287C4F76A21E2D85256CC10083D4A0.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-518

## 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 522-518 This certificate issued to: Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 Purt Aa of the Civi1 Ait Poegulations.

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

Installation of "Two Shot CO2 System Installation" in accordance with drawings called out on DAS Drawing List titled "Two Shot CO2 System Installation" Revision 1 dated 6/30/59, or later FAA approved revision.

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

Date of Application: March 10, 1958 Palereittued: 6/15/92; 12/21/98; 8/31/00 Date of Issuance: December 17, 1959 Date Amended: June 2, 1982 ReV. 6 FEDERAL AVIA TON By Direction of the Administrator (Signature) S. Frances Cox TOMINISTRATO 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 2IP 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):

c FAA AC 69-5536

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/9c/48/9c48d803fc1cdb6fe0ff4bd6063a77191b57d4db2421a9408f9e40061cf15709)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.