# STC SA03265NY

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Rocky Mountain Aircraft, Canada
- Description: Installation of the PT6A-34 Engines derated to 620 SHP, in lieu of PT6A-27 engines
- Applied: August 1, 2012
- Status date: March 27, 2013
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A9EA](https://openairdocs.org/tcds/A9EA)
- Certificate PDF: https://openairdocs.org/files/sha256/78/b8/78b8768e2ba12b747291ef30343c63224ed1b0e79c3c0171d7118e3ffd53bb0b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0726C0D5ED88AE0F86257B71004E0E96.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA03265NY

## ADs that name it (0)

None.

## Approved models (1)

- Viking Air Limited 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.

This certificate issued to

CAR 3 of the Civil Air Regulations.

Original Product -- Type Certificate Number : A9EA

1. Installation of the PT6A-34 Engines derated to 620 SHP, in lieu of PT6A-27 engines, in accordance with Amtech Aeronautical Ltd. “Modification Data Summary” document No. MDS966401, dated July 26, 1996.

2. Operation must be in accordance with Amtech Aeronautical Ltd. Flight & Operations Manual Supplement No. FMS966401, dated July 16, 1996.

3. Maintenance must be in accordance with Amtech Aeronautical Ltd. Maintenance Manual Supplement No. MMS966401, dated July 16, 1996.

Rocky Mountain Aircraft 129 MacLaurin Drive Calgary, Alberta, Canada T3Z 3S4

Make : Viking Air Limited (deHavilland) Model: DHC-6 Series 300

Date of application : August 1, 2012

Date of issuance : March 27, 2013

B y direction of the A dministrator

(Signature) Gaetano Sciortino Manager New York Aircraft Certification Office

(Title)

FAA Form 8110-2-1(10-69) Page 3 of 3

Number SA03265NY Date of Issuance: March 27, 2013

1. With the PT6A-34 engines (derated to 620 SHP) installed on the aircraft, all other engines limitations, except th e increased ITT temperature (T5) and higher oil pressure range, are unchanged from the standard DHC-6-300 series configured with the PT6A- 27 engines.

2. Compatibility of this design change with previously approved modifications must be determined by the installer.

3. If the holder agrees to permit another person to use the certificate to alter the product, the holder shall give the other pe rson written evidence of that permission.

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## Every issue (1)

- March 27, 2013: Issued, Current. [certificate](https://openairdocs.org/files/sha256/78/b8/78b8768e2ba12b747291ef30343c63224ed1b0e79c3c0171d7118e3ffd53bb0b)

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