# STC SA2-1157

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries, Inc, United States
- Description: 2,000 psi hydraulic system
- Applied: May 26, 1961
- Status date: December 1, 1999
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS LTC AL-13](https://openairdocs.org/tcds/LTC%20AL-13)
- Certificate PDF: https://openairdocs.org/files/sha256/49/cd/49cdbadf73954b71762a048a272be85676f2c936ef1a782a5272f811e22ed702
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7B38BA241E1DAECB85256CC10083D425.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-1157

## ADs that name it (0)

None.

## Approved models (1)

- Air Trading Corporation Navy PV-1 ([TCDS LTC AL-13](https://openairdocs.org/tcds/LTC%20AL-13))

## 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: SA2-1157 This certificate issued to: Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 78801 Certifies that the change in the type design for the following product with the limitations and condition's therfor as specified hereon meets the airworthiness requirement's of Part 9 of the CiviI Ait Foegulations.

Original Product Type Certificate Number: LTC-13 Ababe: Lockheed Aircraft Corp.

Model: PV-1 Description of Type Design Change:

2,000 p.s.i. Hydraulic System PV-1, in accordance with Drawing List SD403000-A dated May 25, 1961.

Howard Aero, Inc. FAA Approved Airplane Flight Manual Supplement dated 5/24/61 to Howard Super Ventura Flight Manual required.

Date of Application: May 26, 1961 Date Reissued: December 1, 1999 Date of Issuance: August 04, 1961 Date Amended: May 8, 1967 Revision 3 FEDERAL AVIATION By Direction of the Administrator Michel MOster (Signature) Michele M. Owsley, Manager TOMINSTRATON Airplane 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 ZIP 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)

- December 1, 1999: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/49/cd/49cdbadf73954b71762a048a272be85676f2c936ef1a782a5272f811e22ed702)

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