# STC SA100CH

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Wipaire Inc, United States
- Description: Installation of Pratt & Whitney PT6A-34 engines.
- Applied: September 30, 1992
- Status date: April 8, 2005
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A9EA](https://openairdocs.org/tcds/A9EA)
- Certificate PDF: https://openairdocs.org/files/sha256/30/5f/305f228153749c4b73f1e035c52d310591c6556a22eb497ef51a005d2fed9662
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/63439869A1D77B2586256FE9004DC586.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA100CH

## ADs that name it (0)

None.

## Approved models (1)

- Bombardier Inc. DHC-6-300 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA))

## 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.

1700 Henry Avenue - Fleming Field South St. Paul, MN 55075

Part 3 of the Civil Air Regulations. (See Type Certificate Data Sheet No. A9EA for complete certification basis)

Original Product--Type Certificate Number : A9EA Make : Bombardier Inc (de Havilland) Model : DHC-6-300

Installation of Pratt & Whitney PT6A-34 Engines in accordance with Wipaire Master Drawing List for deHavilland Twin Otter DHC-6-300 with PT6A-34 Engine/13000 Floats dated August 12, 1993, or later FAA Approved Revisions.

1. Compatibility of this design change with previously approved modifications must be determined by the installer. 2. For the Floatplane Configuration, Supplemental Type Certificate SA2CH must be installed. For the Landplane Configuration, the floats are removed in accordance with Wipaire Drawing 7C1-3004, No Revision, dated October 3, 2002, or later FAA approved revision.

3. The appropriate FAA Approved Airplane Flight Manual Supplement, dated August 12, 1993 (Floatplane) or September 27, 2002 (Landplane), or later FAA approved revision is required with this installation. 4. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of application : September 30, 1992

Date of issuance : August 19, 1993 Date reissued :

Date amended : November 26, 2002; April 08, 2005

( Signature) Gregory J. Michalik, Senior Aerospace Engineer Airframe & Administrative Branch Chicago Aircraft Certification Office

(Title) Original signed by:

Gregory J. Michalik

## Every issue (1)

- April 8, 2005: Amended, Current. [certificate](https://openairdocs.org/files/sha256/30/5f/305f228153749c4b73f1e035c52d310591c6556a22eb497ef51a005d2fed9662)

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