The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · amended

SA2599CE

Operation of airplane on unleaded and leaded automotive gasoline, 91 minimum antiknock index (RON+MON)/2 per ASTM Specification D-439. Inter-mixing with aviation gasoline also approved. Held by Petersen Aviation INC, which holds 167 approved modifications in all. Last revised August 24, 2007. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
The New Piper Aircraft Inc.; The New Piper Aircraft Inc.
Models
PA-22-160, PA-22S-160
Type certificates
1A6, 1A6
On this site
Piper PA-22 Tri-Pacer and Colt 2,940 registered
The FAA's record
On the FAA's site

What an approved modification is

A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.

Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 5, 2026.