# STC SE02837NY

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Rocky Mountain Aircraft, Canada
- Description: The conversion of the Pratt & Whitney Canada PT6A-21 engine to operate as a PT6A-28 engine to be done.
- Applied: August 27, 2010
- Status date: August 27, 2010
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E4EA](https://openairdocs.org/tcds/E4EA)
- Certificate PDF: https://openairdocs.org/files/sha256/45/cd/45cd540e81f66bd2ba74ffcd4584a67ad9764443ed9716bd7bc92b4d12fb3ca7
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/33C506D6C787CE90862578DF004C38ED.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE02837NY

## ADs that name it (0)

None.

## Approved models (1)

- Pratt & Whitney Canada Corp. PT6A-21 ([TCDS E4EA](https://openairdocs.org/tcds/E4EA))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Project #FST6713NY-E Department of Transportation Federal Aviation Administration Supplemental Type Certificate IMPORT Number: SE02837NY This certificate issued to: Rocky Mountain Aircraft 129 MacLaurin Drive Springbank Airport Calgary, Alberta Canada T3Z3S4 Purt 33 of the Federal Aviation Regulations.

Original Product Type Certificute Number: EAEA Abuke: Pratt & Whitney Canada Model: PT6A-21 Description of Type Design Change: The conversion of the Pratt & Whitney Canada PT6A-21 engine to operate as a PT6A-28 engine to be done in accordance with Rocky Mountain Aircraft Technical Instruction RMA-1347-01, Rev 0, dated November 29, 2009, or later Transport Canada approved revision.

1. The existing Pratt & Whitney Canada Instructions for Continued Airworthiness for the PT6A-28 models remain applicable to the converted engines.

2. Maintain as Model PT6A-28 in accordance with Pratt & Whitney Maintenance Manual P/N 3013242 and Overhaul Manual P/N 3013243.

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.

Date of Application: May 31,2010 Date Reissued:

Date of Issuance: August 27, 2010 Date Amended:

FEDERAL AVIATION By Direction of the Administrator 2 Ra TOMINISTRATO Anthony Socias Manager (Signature) New York Aircraft Certification Office (Title) 47

## Every issue (1)

- August 27, 2010: Issued, Current. [certificate](https://openairdocs.org/files/sha256/45/cd/45cd540e81f66bd2ba74ffcd4584a67ad9764443ed9716bd7bc92b4d12fb3ca7)

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