# STC SA2-310

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installation of auxiliary electric hydraulic pump.
- Applied: September 9, 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/sha256/14/c3/14c317c02ce95a8cae82a7ba857b24e3cd1ab6c8dd7aa99cd948724483485feb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D9CA0EC400C6281685256CC10083D473.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-310

## 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.

JSnil(i) JSlatrs ODf department ai *9Iranspnrlatton - <Afc rattan JVfcmimatrattmt (Esrttftcate Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 Civil Air 723 Lockheed 18 Installation of auxiliary electric hydraulic pump in accordance with Drawing List SD403000-8H dated 10/21/65, or later FAA approved revision.

1. Placard per Dwg . 5D403764A is required for non-SR-407 aircraft (aircraft without an AFM) .

2. CAA. Approved AFM Supplement dated 12/18/57 or FAA Approved AFMS dated 3/3/64 is required for SR-407 aircraft with gross weight up to 19,500 Ibs .

3. This STC is part of the basic Howard 250 and H250 Tri-Gear aircraft modifications and this system is covered in the flight manuals for these models .

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

.- September 09, 1957 January 08, 1958 ; 12/21/98; 8/31/00 .- June 30, 1982 Rev. 10 (Signature) ""S. Frances Cox Manager, Special Certification Office, Southwest Region

This certificate say be transferred In accordance with FAB 21.47.

] NS I RUC I IONS: The ir.insfcr endorsement below may be used to notify the iippropriaie FAA Regional Office of the transfer eif ihis Supplemental T\pr Ccnificaic.

Fhr FAA will reissue the < iTliliralr in the name of the transferee and forward it [o him.

TRANSFER ENDORSEMENT Transfer ihe ownership of Supplemental Type Certificate Number to (Name of transferee) (Address oj transjeree) (Number and ilifftf . Slate, and flP rode I from (Name of grantor) (Print or type).

(Address of grantor) * arttt street} (Cilt.SloIr, and ^1P /otlr) Extent of Authority (if licensing agreement):.

Signature of grantor (In ink):

**C FAA AC 03-5536**

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/14/c3/14c317c02ce95a8cae82a7ba857b24e3cd1ab6c8dd7aa99cd948724483485feb)

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