# STC SA4335SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Standard Aero Inc
- Description: Installation of Pratt and Whitney engines and Hartzell propellers
- Status date: June 6, 2011
- Data sheets: A8EA, A8EA, A8EA
- Certificate PDF: https://openairdocs.org/files/sha256/7d/bf/7dbff1c4f9aab902e6f12cf3b0c57fa7ad70225d1d508dcde871958a4156649c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A64100856634701C862579AD0076018D.0001
- Page: https://openairdocs.org/stc/SA4335SW

## ADs that name it

None.

## Approved models (3)

- Piper Aircraft Inc. PA-31T (TCDS A8EA)
- Piper Aircraft Inc. PA-31T1 (TCDS A8EA)
- Piper Aircraft Inc. PA-31T2 (TCDS A8EA)

## 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

Part 23 of the Federal Aviation Regulations.

Configuration 1: Installation of Pratt and Whitney PT6A-135 or PT6A-135A engines and Hartzell HC-B3TN-3C/T10178-8R propellers in accordance with Drawing List No. 10,000, dated March 3, 1999, or later FAA approved revision.

1. A copy of this Certificate and FAA Approved Airplane Flight Manual Supplement, dated March 29, 1999, or later FAA approved revision must be maintained as part of the permanent records for the modified aircraft for Configuration 1.

2. Aircraft Flight Manual Supplement for Piper Cheyenne PA-31T1, Document PA-31T1 SCRO, FAA approved October 22, 2001 is required with Configuration 2.

3. Configuration 1 applies to PA-31T aircraft.

4. Configuration 2 applies to PA-31T1 aircraft.

Standard Aero, Inc.

1200 North Airport Drive Springfield, IL 62707 A8EA Make: Piper Aircraft, Inc.

PA-31T, PA-31T1, PA-31T2 Model:

Date of application: February 10, 1981

Date of issuance: May 4, 1981

Date reissued: May 26, 1993, April 15, 1999, March 7, 2007, June 6, 2011

Date amended: November 1, 1998; March 29, 1999,October 22, 2001; May 7, 2004 By direction of the Administrator

( Signature) Timothy Hadsall Acting Manager New York Aircraft Certification Office

( Title)

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

Number SA4335SW Date of Reissue: June 6, 2011

Description of Type Design Change (Continued):

Configuration 2: Installation of a Pratt and Whitney PT6A-135 or PT6A-135A engine and Hartzell HC-B3TN-3C/T10178-8R propeller in accordance with Drawing List No. 10,000, Revision A, dated 01/26/01.

Configuration 3: Installation of a Pratt and Whitney PT6A-135A engine and Hartzell HC-B3TN-3B/T10178B-8R propeller in accordance with Master Drawing List (MDL) No. 10,000; Revision B, dated January 26, 2004.

5. Configuration 3 applies to PA-31T2 aircraft.

6. 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.

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

…END…

## Every issue (2)

- June 6, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/7d/bf/7dbff1c4f9aab902e6f12cf3b0c57fa7ad70225d1d508dcde871958a4156649c)
- March 7, 2007: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/c5/9f/c59fac0c1acb6878955f46c10b9ed6fe49bcf142adbfd53daf4bcdd954d6245a)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.