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Fuel systems

STC SA970SO

FAA DRS lists SA970SO as Current · Reissued, held by Mike Jones Aircraft Sales Inc., for Piper Aircraft PA-31 and Piper Aircraft PA-31-325. Recorded change: 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. Snapshot dated June 30, 2026.

FAA-listed holder
Mike Jones Aircraft Sales Inc.
Aircraft configurations
2
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

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.

SA970SO identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.

Applicability

Aircraft named in FAA DRS

Named aircraft: Piper Aircraft PA-31 and Piper Aircraft PA-31-325. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Piper Aircraft PA-31A20SOPiper Aircraft PA-31-325A20SO

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Piper Aircraft PA-31 and Piper Aircraft PA-31-325 model, serial range, and configuration?
  2. 02Which tanks, plumbing, usable-fuel assumptions, and inspections apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

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