# STC SA02973CH

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Hartzell Engine Technologies, LLC, United States
- Description: Installation of C&D Associates Distribution Modification Kit P/N CD29151
- Applied: March 10, 2011
- Status date: February 11, 2016
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO)
- Certificate PDF: https://openairdocs.org/files/sha256/a5/67/a567313b3b171592ce02c9760443dc44c9a0d0ac8351a36b62fb0cb45aae14f8
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/66F98C0A6B8D146886257FAE005D6F92.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA02973CH

## ADs that name it (0)

None.

## Approved models (1)

- Piper Aircraft Inc. PA-31-350 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))

## 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 3 of the Civil Air Regulations.

See Type Certification Data Sheet No. A20SO for complete certification basis.

Installation of C&D Associates Distribution Modification Kit P/N CD29151, in accordance with C&D Associates Installation Instructions IN29151, Rev. -, dated February 16, 2011 or later FAA approved revision.

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

2. A copy of this certificate must be maintained as part of the permanent records for the modified aircraft.

3. Full compliance with the C&D Associates Instructions for Continued Airworthiness Rev. -, dated March 22, 2011 or later FAA approved revision is required.

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

Hartzell Engine Technologies LLC 2900 Selma Highway Montgomery, Alabama 36108 A20SO Make: Piper Model:

PA-31-350

Date of application : March 10, 2011

Date of issuance : May 31, 2011 Date reissued : February 11, 2016

(Signature) Timothy P. Smyth Manager, Chicago Aircraft Certification Office

(Title)

FAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES

Transfer the ownership of Supplemental Type Certificate Number

to (Name of transferee)

(Address of transferee)

from (Name of grantor) (Print or type)

(Address of grantor)

Signature of grantor (In ink):

## Every issue (2)

- February 11, 2016: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a5/67/a567313b3b171592ce02c9760443dc44c9a0d0ac8351a36b62fb0cb45aae14f8)
- May 31, 2011: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/f3/4d/f34d4e9977c4ba162da9752baa94d4c74074ed7453141eeb8a936a5c62847cb8)

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