# STC SA52SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries, Inc, United States
- Description: Installation of Elevator nose down spring with electric actuator relief system.
- Applied: April 3, 1962
- Status date: December 1, 1999
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS LTC-13](https://openairdocs.org/tcds/LTC-13)
- Certificate PDF: https://openairdocs.org/files/sha256/09/b1/09b1cac34153f7c346f4a28fbb2b255b5fdecda39b17e499bdd69dbf4e635964
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DCCC126EE19A3B7185256CC20012282C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA52SW

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Aircraft Corporation Navy PV-1 ([TCDS LTC-13](https://openairdocs.org/tcds/LTC-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.

JIHmtzh Js&tstez Jeptrlmmi of "(Sransfwrtaium - SA52SW Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 78801 Civil Air LTC 13 'Lockheed Aircraft Corp.

PV-1 To modify the PV-1 for installation of elevator nose down spring with electric actuator relief system in accordance with HAI Drawing List SD408000-13B dated 10/25/63.

we .-April 03, 1962 March 04, 1963 December 1, 1999 May 8, 1967 Revision 3 (Signature) Michele M. Owsley, Manager 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 £IP code) from (Name of grantor) (Print or type) .

(Address of grantor) (Number and street) (City, State, and ^IP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

U.S. GOVERNMENT PRINTING OFFICE : 1966 OF —205-579

## Every issue (1)

- December 1, 1999: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/09/b1/09b1cac34153f7c346f4a28fbb2b255b5fdecda39b17e499bdd69dbf4e635964)

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