# STC SH1852SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Bell Helicopter Textron Inc., United States
- Description: Installation of replacement or supplemental interior ducting for heating and/or ECU systems.
- Applied: June 27, 1985
- Status date: May 29, 2013
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW)
- Certificate PDF: https://openairdocs.org/files/sha256/ac/f8/acf8a16256037db9dce9f106a71fa4c913f502aa955a9a7b0f3e5663795b0117
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/42B749D69723D74086257C1300602755.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH1852SO

## ADs that name it (0)

None.

## Approved models (4)

- Bell Helicopter Textron Canada Limited 206A ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206B ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L-1 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))

## 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.

N umber SH1852SO This certificate issued to

Part 6 of the Civil Air R egulations .

Original Product -- Type Certificate N umber :

Installation of replacement or supplemental interior ducting for heating and/or ECU Systems in accordance with Aeronautical Accessories, Inc., Report AA-85028, Drawing List, Interior Ducting, dated August 28, 1985, or later FAA approved revisions.

The approval of this change applies basically to Bell Models 206A/B/L/L-1 helicopters.

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.

This determination should include consideration of significant changes in weight distribution such as an increase in the fixed disposable weight in the fuselage.

Bell Helicopter Textron, Inc.

441 Industrial Park Road Piney Flats, TN 37686 H2SW M ake : Bell Helicopter Textron Canada Limited M odel : 206A, 206B, L and L-1 Date of application : June 27, 1985

Date of issuance : October 18, 1985

Date reissued : May 29, 2013

Date amended : October 8, 1986

B y direction of the A dministrator

(Signature) Scott A. Horn, Acting Manager, Rotorcraft Certification Office, Southwest Region

(Title)

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

## Every issue (1)

- May 29, 2013: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ac/f8/acf8a16256037db9dce9f106a71fa4c913f502aa955a9a7b0f3e5663795b0117)

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