# STC SA970SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Mike Jones Aircraft Sales Inc.
- Description: Installation of Lycoming TIO-540-J2BD or TIO-540-J2B engines and Hartzell propellers HC-C4YR-2/FC7663D-4R or HC-C4YR-2/FC7663D-6Q, additional fuel pump and related cowling changes.Modification Drawing Piper Navajo PA-31 Navajo-Panther-Drawing 68000, Revision D, Dated 5/17/82.
Installation Instructions for Modification of Piper Navajo Model PA-31 and PA-31-325, Drawing 68000, change D  dated 5/17/82 and Supplemental Type Certificate (STC) SA970SO.
Installation Procedures Boost Pump PA-31 Drawing 62000 A  Change dated November 30, 1977. (PA-31 Only)
Piper Kit 760-905
Colemill Enterprises, Inc., Process Specification for Drawings 64000 and 66000, dated August 31, 1977.
Colemill Enterprises, Inc., Process Specification #500 for Piper Wing Caps and Winglets, dated September 1, 1981.
Later FAA approved revisions of the above data are acceptable.
- Status date: February 10, 2011
- Data sheets: A20SO, A20SO
- Certificate PDF: https://openairdocs.org/files/sha256/c9/f1/c9f158a8883d263dafadb813371532f646eccc837123f9fa6839364af0670635
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2F58550886156CF78625784E00783BD0.0001
- Page: https://openairdocs.org/stc/SA970SO

## ADs that name it

- [AD 81-12-06 R1](https://openairdocs.org/ad/81-12-06-R1): Magnetos · Bendix Magnetos, LTIO-540-J2BD and TIO-540-J2BD. Effective Nov 12, 1981

## Approved models (2)

- Piper Aircraft Inc. PA-31 (TCDS A20SO)
- Piper Aircraft Inc. PA-31-325 (TCDS A20SO)

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (3)

- February 10, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c9/f1/c9f158a8883d263dafadb813371532f646eccc837123f9fa6839364af0670635)
- May 25, 2007: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/f1/9a/f19ac3a1df330df3897b10dd30cf1ba7a4df1ed91859853612df2a785fc8fd2b)
- October 20, 1992: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/f1/9a/f19ac3a1df330df3897b10dd30cf1ba7a4df1ed91859853612df2a785fc8fd2b)

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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.