# STC SH3311SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Bell Helicopter Textron Inc., United States
- Description: Manufacture of Replacement Windows in accordance with Aeronautical Accessories, Inc. Drawing List Report No. AA-92083, Rev. M, dated September 20, 2010, or later FAA approved revisions, and installation per Installation Instructions  as listed in that report.
- Applied: August 24, 1992
- Status date: February 1, 2011
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 29
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/81/31/8131a55eae2e6e575816aeac33576a494594b1d72542ce2397aa9f3c96b51f4f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0A88A302B466BF0D862578B80045FEEB.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH3311SO

## ADs that name it (0)

None.

## Approved models (4)

- Bell Helicopter Textron 212 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))
- Bell Helicopter Textron 412 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))
- Bell Helicopter Textron 412CF ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))
- Bell Helicopter Textron 412EP ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))

## 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.

Number SH3311SO This certificate issued to

Part 29 of the Federal Aviation Regulations.

Manufacture of Replacement Windows in accordance with Aeronautical Accessories, Inc.

Drawing List Report No. AA-92083, Rev. M, dated September 20, 2010, or later FAA approved revisions, and installation per “Installation Instructions” as listed in that report.

The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

Bell Helicopter Textron, Inc.

441 Industrial Park Road Piney Flats, TN 37686 H4SW Make : Bell Helicopter Textron Model : 212, 412, 412EP, 412CF Date of application : August 24, 1992

Date of issuance : September 08, 1992

Date reissued : September 29, 1992;

February 01, 2011

Date amended : February 24, 1995, March 26, 1998; December 01, 2010

( Signature) James A. Richmond, Acting Manager Rotorcraft Certification Office, Southwest Region

( Title)

FAA Form 8110-2-1(10-69) Page 2 of 2

## Every issue (2)

- February 1, 2011: Amended, Current. [certificate](https://openairdocs.org/files/sha256/81/31/8131a55eae2e6e575816aeac33576a494594b1d72542ce2397aa9f3c96b51f4f)
- December 1, 2010: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/9c/1d/9c1d884916433520f3e24932381d65e7c0b3c788599011a3caf5b6bfb634161b)

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