# STC SE00003EN

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: MORE Company Inc, United States
- Description: Instructions for Continued Airworthiness for the PT6A-6/C20, -20, -20A and, -20B engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals.
- Applied: January 24, 1994
- Status date: October 4, 2022
- Product: Engine
- Certification basis: Part 21, Part 33
- Data sheets: [TCDS E4EA](https://openairdocs.org/tcds/E4EA)
- Certificate PDF: https://openairdocs.org/files/sha256/06/27/06277ed7ce1eb2cb9afa82b2212a7394bb5f11ebce8d801f341cc9a8e3226e0f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID184379779020221012153340.0001
- DRS record last changed: February 25, 2026
- Page: https://openairdocs.org/stc/SE00003EN

## ADs that name it (0)

None.

## Approved models (4)

- Pratt & Whitney Canada, Inc. PT6A-20 ([TCDS E4EA](https://openairdocs.org/tcds/E4EA))
- Pratt & Whitney Canada, Inc. PT6A-20A ([TCDS E4EA](https://openairdocs.org/tcds/E4EA))
- Pratt & Whitney Canada, Inc. PT6A-20B ([TCDS E4EA](https://openairdocs.org/tcds/E4EA))
- Pratt & Whitney Canada, Inc. PT6A-6/C20 ([TCDS E4EA](https://openairdocs.org/tcds/E4EA))

## 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.

United States of America Department of Transportation Federal AviationAdministration Supplemental Type Certificate Number: SE00003EN

This certificate issued to: MORE Company, Inc.

5395 Mountain Creek Court Reno, NV 89511 33 of Federal Aviation Regulations .

E4EA Make: Pratt & Whitney Canada Model: PT6A-6/C20, PT6A-20, PT6A-20A, Description of Type Design Change: PT6A-20B Instructions for Continued Airworthiness for the PT6A-6/C20, PT6A-20, PT6A-20A and PT6A-20B engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. Use of these Instructions for Continued Airworthiness provides for the extension of hot section inspection (HSI), and time between overhaul (TBO) intervals, and supersedes the need for compliance with the HSI, (Continued on page 3) Limitations and Conditions:

PT6A-6/C20, PT6A-20, PT6A-20A and PT6A-20B engines using this Supplemental Type Certificate will be maintained in accordance with Revision 4 of the Maintenance on Reliable Engines (MORE) Instructions for Continued Airworthiness, dated December 28, 2000. (Continued of page 3.)

Date of Application: January 24, 1994

Date Reissued: October 4, 2022

Date of Issuance: April 21, 1994 Date Amended: July 30, 2003

Title: Manager, ECO Branch, Section B

United States of America Department of Transportation Federal AviationAdministration Supplemental Type Certificate Number: SE00003EN

United States of America Department of Transportation Federal AviationAdministration Supplemental Type Certificate

(Continuation Sheet) Number: SE00003EN Description of Type Design Change (Continued):

and TBO intervals defined in Pratt & Whitney Canada PT6A Service Bulletin Number 1803 latest revision.

The rotor component service lives defined in Pratt & Whitney Canada PT6A Service Bulletin Number 1002, latest revision, are to be complied with, and are not superseded by the module repair intervals defined in the MORE Program. The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate, the holder shall give the other person written evidence of that permission.

## Every issue (2)

- October 4, 2022: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/06/27/06277ed7ce1eb2cb9afa82b2212a7394bb5f11ebce8d801f341cc9a8e3226e0f)
- March 6, 2009: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/3c/8c/3c8c9b973eb1ee38cd1d02120a0f61a177b381438dab1bab62d03af9663470fb)

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