# STC SA2-481

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries, Inc, United States
- Description: Installation of airspeed system
- Applied: March 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/sha256/27/9d/279da925a965e19c0c002cbddfcdc41a6b6f42786b04328b807e1604b05ce394
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7A3DB057695ED04385256CC10083D492.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-481

## 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

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.

JHnittb ^States (©£ jft JJeparimmt 0f ^Eraitsporlation - ^feoeral .Afaiatum tAbmtmstratian (Ksrttftc&te SA2-481 Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 78801 MaS Me Civil Al r LTC-13 Lockheed Aircraft Corp.

PV-l Installation of airspeed system in accordance with Howard Aero, Inc. Drawing Nos. 1394, Change B, dated 8/29/58; 1395 dated 3/21/58, and 1155 dated 3/12/57.

Howard Aero, Inc. Supplement dated May 6, 1958, to Pilots Flight Operating Instructions T. O. No. 01-55EC-1 required with this modification.

Installation of radome and fairing per 3TC SA2-369 required with this airspeed system.

.• Match 25, 1958 October 31, 1958 .- December 01, 1999 ,- May 8, 1967 Revision 3 Michele M. Owsley, Manager Airplane Certification Office, Southwest Region (Title) Any alteration of thJs certificate i? punishable by a fine of rtot exceeding $1,000, or Imprlsoflxent flat years, or botft.

FAA Form 8110-3(10-6*) Page I of 2 J J cerCi flcate w^y be transferrftl in *ccor dance with FAR 21 .4?-

INSTRUC I IONS, '['he transfer endorsement below may be used 10 notify the appropriate FAA Regional Office of [he transfer of this Supplemental Type Certificate.

The FAA will reissue the crrtifirate in the name of the transferee and forward il to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) I Nvnbei and itrettf (City, Slott, ami ZIP twit) from (Name of grantor) (Print or type) (Address of grantor) r and ilifct) Ctty, Stale, and %IP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

**C FAA AC 89-5516**

## Every issue (1)

- December 1, 1999: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/27/9d/279da925a965e19c0c002cbddfcdc41a6b6f42786b04328b807e1604b05ce394)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.