# STC SH1227SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Bristol Aerospace Ltd, Canada
- Description: Installation of a wire strike protection system.
- Applied: March 20, 1981
- Status date: October 22, 2009
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H3WE](https://openairdocs.org/tcds/H3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/ea/0e/ea0e331d6a1ff7cbbefaef2f1e3c8f81c4951ca9d1fec9839326fe5b75a4167c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7214A13CA2869CB5862576A9004DF97C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH1227SO

## ADs that name it (0)

None.

## Approved models (5)

- MD Helicopter Inc. 369D ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369H ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HE ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HM ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HS ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))

## 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.

Part 6 of the Civil Air Regulations.

Description of Type Design Change: Installation of a Wire Strike Protection System in accordance with Bristol Aerospace, Ltd. Drawing List EM19186 Issue S, dated June 20, 2008, Transport Canada approved June 20, 2008 or later Transport Canada approved revisions.

1. Installation of a longer tip on the lower cutter in accordance with Bristol Aerospace Ltd. Installation Instructions ER80021 Issue J referred in the Drawing List EM19186 Issue S, dated June 20, 2008 is also required for aircraft equipped with High Skid Gear Installation.

Bristol Aerospace, Ltd.

P. O. Box 874 660 Berry St.

Winnipeg, Manitoba Canada, R3C 2S4 H3WE MDHI 369D, 369H, 369HE, 369HM, 369HS Date of application: March 20, 1981

Date of issuance: May 18, 1981

Date amended: October 22, 2009

(Signature) Anthony Socias Manager New York Aircraft Certification Office

(Title)

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

Number SH1227SO Date of Amendment: October 22, 2009

2. Bristol Aerospace Ltd. Maintenance Manual Supplement PM-965-075A Issue A, dated May 26, 2008, Transport Canada accepted June 20, 2008 or later Transport Canada accepted revisions is required with this installation.

3. The installer must determine whether this design change is compatible with previously approved modifications.

4. 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.

……………………………END……………………………

## Every issue (1)

- October 22, 2009: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ea/0e/ea0e331d6a1ff7cbbefaef2f1e3c8f81c4951ca9d1fec9839326fe5b75a4167c)

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