STC SA1151SO

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller. The STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is th e property of the STC holder.

FAA Form 8110-2 (5/14) Page 1 of 2

Number: SA1151SO

This certificate issued to: Mike Jones Aircraft Sales, Inc 1932 Memorial Blvd.

Murfreesboro, TN 37129

Part 23 of the 14 Code of Federal Regulations.

Original Product – Type Certificate Number: A20SO Make: Piper Model: PA-31-350 Description of Type Design Change:

Installation of Hartzell four-blade Propellers, cowling changes, winglets or wingtip extension, optional governor arm adaptor, and optional engine isolator mounts per: Colemill Enterprises, Inc. Drawing 72000, Revision E, dated August 10, 1983; Mike Jones Aircraft Sales Optional Engine Isolator Mount Drawing 73000, Revision IR, dated December 12, 2020; Mike Jones Aircraft Sales Governor Arm Adaptor Drawing 65000-1, Revision IR, dated May 5, 2020; and STC SA1151SO Installation Instructions, Revision C, dated September 11, 2020. Later FAA approved revisions to the above data are acceptable.

FAA approved Airplane Flight Manual Supplements AFMS-1151-1, AFMS-1151-2, or AFMS-1151-3, all Revision 2, dated June 15, 2021, and the applicable Aircraft Flight Manual or Pilot’s Operating Handbook for the serial number being modified.

This approval should not be extended to other aircraft of the model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. This determination should include consideration of significant changes in weight distributions such as an increase in the fixed disposable weight in the fuselage.

Date of Application: October 18, 1979 Date Reissued: June 23, 2021 Date of Issuance: June 19, 1980 Date Amended: June 23, 2021 By Direction of the Administrator Signature

Title: (for) Christina M. Underwood Manager, Atlanta ACO Branch

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1151SO

This cer tificate may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21.47.

FAA Form 8110-2 (5/14) Page 2 of 3

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1151SO

This cer tificate may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21.47.

FAA Form 8110-2 (5/14) Page 3 of 3

Date of reissue: June 23, 2021

Certification Basis: Based on Civil Air Regulations (CAR) 3 effective May 15, 1956, through Amendment 3-8, effective December 18, 1962; and 14 CFR §§§§ 23.205, 23.1545, 23.1563, and 23.1585 as amended by Amendment 23-3, effective November 11, 1965;

and 14 CFR § 23.1557(c) as amended by Amendment 23-7, effective September 14, 1969, and Eastern Region Engineering and Manufacturing Branch Letter of December 6, 1965, addresses the showing of ELOS (Equivalent Level of Safety) with regard to CAR

3.682, 3.771, and 3.772. In addition, Piper Model PA-31-350 contains 14 CFR 23.75(a), 23.77, 23.145, 23.161, 23.175(d), and

23.1527 as amended by Amendment 23-7, effective September 14,1969, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for the Piper Model PA-31-350 airplane is as follows:

1. The type certification basis for the Piper Model PA-31-350 airplane is shown on TCDS A20SO for parts not changed or not affected by the change.

2. The certification basis for the parts changed or affected by the change since the reference date of application December 17, 2020, is based upon the original certification basis of the original supplemental type certification, as seen above.

Regulations at later amendment than Civil Air Regulations (CAR) 3:

14 CFR Part Amendment

23.205 23-3

23.1545 23-3

23.1563 23-3

23.1585 23-3

23.1557(c) 23-7

23.75(a) 23-7

23.77 23-7

23.145 23-7

23.161 23-7

23.175(d) 23-7

23.1527 23-7

END