# STC SE02688NY

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Standard Aero Limited, Canada
- Description: This modification would incorporate improved compressor components into the Pratt & Whitney PT6A-28 engine from the PT6A-135A engine.
- Applied: March 16, 2009
- Status date: June 24, 2009
- Product: Engine
- Certification basis: Part 21, Part 33
- Data sheets: [TCDS E2NE](https://openairdocs.org/tcds/E2NE)
- Certificate PDF: https://openairdocs.org/files/sha256/3e/f8/3ef81b6de7aa39057bc023a06a2e762566ccac55685e1f154c4a9995b1a8ee4a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/009BE58798609FBC8625760E004698D5.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE02688NY

## ADs that name it (0)

None.

## Approved models (1)

- Pratt & Whitney Division PT6A-28 ([TCDS E2NE](https://openairdocs.org/tcds/E2NE))

## 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 33 of the Federal Aviation Regulations.

This modification would incorporate improved compressor components into the Pratt & Whitney PT6A-28 engine from the PT6A- 135A engine in order to have better altitude performance than the base engine.

1. Installation in accordance Standard Aero Limited Engine Modification Instructions TODR 71075, Revision Initial, dated December 19, 2008, or later Transport Canada approved revision.

2. Maintain in accordance with Standard Aero Limited Instructions for Continued Airworthiness (Maintenance) ICA RDC 008-03 M, Revision Initial, dated May 20, 2008 or later Transport Canada accepted revision.

3. Overhaul in accordance with Standard Aero Limited Instructions for Continued Airworthiness (Overhaul) ICA RDC 008-03 OH, Revision Initial, dated December 20, 2007, or later Transport Canada accepted revision.

4. The Installer must determine whether this design change is compatible with previously approved modifications.

5. 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

Standard Aero Ltd.

33 Allen Dyne Road Winnipeg, Manitoba Canada R3H 1A1 E2NE Pratt & Whitney PT6A-28 Date of application: March 16, 2009

Date of issuance: June 24, 2009

( Signature) Anthony Socias Manager New York Aircraft Certification Office

( Title)

## Every issue (1)

- June 24, 2009: Issued, Current. [certificate](https://openairdocs.org/files/sha256/3e/f8/3ef81b6de7aa39057bc023a06a2e762566ccac55685e1f154c4a9995b1a8ee4a)

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