# STC SA2-601

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries, Inc, United States
- Description: Modification of brake system by installing a Westinghouse AH-5 decelostat controller.
- Applied: June 25, 1958
- 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/bf/4d/bf4d2ea41d13d9d06b37ca6047ce37a24be1f8e07a775dd7317aafe5676abba9
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/92A5BF8952AF20CC85256CC10083D4B7.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2-601

## ADs that name it (0)

None.

## Approved models (2)

- Air Trading Corporation Navy PV-1 ([TCDS LTC AL-13](https://openairdocs.org/tcds/LTC%20AL-13))
- Air Trading Corporation Navy PV-2 ([TCDS LTC AL-13](https://openairdocs.org/tcds/LTC%20AL-13))

## 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.

JHniteEi j&taiM ffif .America Department of 'EraitepDttation - ^fciicral JVbtation JXiunmislraitmt (Herttftcateupplemetttal 3A2-601 Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 78801 9 gXs^ Civil Air LTC-13 Lockheed Aircraft Corp.

PV-1, PV-2 Modification of brake system by installing a Westinghouse AH-5 decelostat controller in accordance with Howard Aero, Inc. Drawing List dated 6/16/58, as revised 7/23/58, and installation instructions June 16, 1958.

(See continuation sheet 3 of 3) .• June 25, 1958 July 25, 1958 .- December 1, 1999 May 8, 1967 Revision 7 (Signature) Michele M. Owsley, Manager Airplane Certification Office, Southwest Region (Trite)

Page 1 of 3 This certificate My be transferred in accordance wJE/i FAR 21,47.

JHittttb ^tatee ®f .Amerita department of ^transportation - ,3fc&eral ^fatatton .Ahmtmslratinit (Eerttftcate (CUtmttttuattxm J SA2-601 Date of Issuance: July 25, 1958 . - Reissuance Date: December 1, 1999 rrtmf fiasit/c/festJ (Continued):

1. Without STC SA2-659 emergency brakes system, this STC applicable only on Lockheed PV-1, PV-2, and Super Ventura with separate brake system for pilot and co-pilot.

2. STC 3A2-443 modified brake system must be accomplished prior to modification.

3. Pertinent portions of Howard Aero, Inc. CAA Airplane Flight Manual Supplement dated 11/1/58 to TO 01-55-EC-l and 01-55-ED-l required with this modification installed on Lockheed PV-1 or PV-2 aircraft. Howard Aero, Inc. FAA Approved Airplane Flight Manual Supplement dated 1/25/60 required when this modification is installed on Lockheed Super Ventuta.

-END- Any Jitertftfon of thlj certificate is punishable by A fine ot not BKceeding $1,QQQ, or iptptisona&nt not enoeeding1 3 years, or both, FAA Fotitt 8110-2-1(10-69) Paqe 3 of 3 This certificate aay be transferred in sceofdance with FAK 21.47.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number .

to (Name of transferee) (Address of transferee) umbt' and sf'fei) (Ctly, Stall, and QP rath) from (Name ojgrantor) (Print or type) (Address of grantor) f Number and ititcll fCttf, Ulaic, and ZIP t Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

**C FAA AC 69-5536**

## Every issue (1)

- December 1, 1999: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/bf/4d/bf4d2ea41d13d9d06b37ca6047ce37a24be1f8e07a775dd7317aafe5676abba9)

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