# STC SA1581SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries, Inc
- Description: Center section main wing spar reinforcement.
- Status date: December 1, 1999
- Data sheets: A-2-582
- Certificate PDF: https://openairdocs.org/files/sha256/79/96/7996ff23138c75ddbe8e6b35aada390060e1411c0902794cb43737f2b9cf727d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C28594D48C1D27DF85256CC1008213C1.0001
- Page: https://openairdocs.org/stc/SA1581SW

## ADs that name it

- [AD 75-27-09 R2](https://openairdocs.org/ad/75-27-09-R2): Wing Structure · Textron 18A, 18D, 18S (Army C-45C) and 27 more. Effective Aug 21, 1980

## Approved models (1)

- Beechcraft Corporation Army AT-11 (TCDS A-2-582)

## 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.

JBntttb ^tatra Apartment of mranBpnrtatwrt - Jffehcral ,AHatt0n Certificate SA1581SW Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 79801 meA Me 4 a n-f£n.e C i vi 1 Ai r A-2-5B2 (Airworthiness Certificate Only) Raytheon Aircraft Co. (Beechl Center section main wing spar reinforcement in accordance with The Dee Howard Company Drawing List 18-0567-OOOL, Revision H, dated 4/26/73.

This modification exempts aircraft from the requirements of AD 72-20-5.

.- December 21, 1972 January 03, 1973 .- December 01, 1999 .- May 1, 1973 Revision 1 t&rvv&asi eyed*?- .

(Signature) Michele M. Owsley, Manager Airplane Certification Office, Southwest Region (Title) Any alteration of £/ilj c«rEJflc'Ce ij punishable by a fin* of not exceeding $1,000. oc not exceeding 3 ycjrJy of FAA Forn 6110-2(10-*6) Page 1 of 2 certificate «jy jt« tranjfefred in accordance wl Ch FAfi

TRANSFER ENDORSEMENT Transfer che ownership of Supplemental Type Certificate Number to (Nameoftransftrtt) (Addieu of transfers) and s / City. Slat,, and £IP «xtl) from (Name of grantor) (Print or type) (Address of grantor) (Jiumbtr arid ItrrrfJ . Slau, Extent of Authority (if licensing agreement):

Signature oi grantor (In ink):

**C FAAAC6S-S536**

## Every issue (1)

- December 1, 1999: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/79/96/7996ff23138c75ddbe8e6b35aada390060e1411c0902794cb43737f2b9cf727d)

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