# STC SA2-251

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Warren McArthur chair model 225 installed in cockpit for pilot and co-pilot chairs.
- Applied: May 17, 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/sha256/32/23/322316379e38d90f954fee0f6a272e61ac2c05959634f1efb32de80d6342ac19
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D16E19D4B5F2CDBE85256CC10083D465.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2-251

## 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 5A2-251 This certificate issued to: Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 Part 4a of the CiVil Aix Poegulations.

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

Warren cArthur Chair Model 225 installed in the cockpit for pilot and co-pilot chairs. Support structure shown on EAS Dwg. #342540 dated April 11, 1957, or later FAA approved revision.

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

Date of Application: May 17, 1957 Date Reissued: 6/15/92; 12/21/98; 8/31/00 Date of Issuance: August 09, 1957 Date Amended: 1/27/81; 6/30/82 Rev. 2 By Direction of the Administrator foR s. Frances Cox (Signature) TOMINSTRATIO Manager, Special Certification Office, Southwest Region (Title)

FAA Form 8110-2(10-6B) Page 1 of 2

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee).

(Address of transferee) - (Number and street) (City, State, and ZIP code ) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and RIP 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/sha256/32/23/322316379e38d90f954fee0f6a272e61ac2c05959634f1efb32de80d6342ac19)

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