Piper PA-20

SM-28 Piper Miscellaneous FAA Field Approvals

04/13/2022Univair
The following installations have been FAA approved in the field. The party securing the approval is also listed.

SM-35 Piper PA-20/PA-22 Increase in Gross Weight

09/30/2021Univair
Increase in gross weight 1800 to 1950 pounds (Lycoming 0-290-d engine) (125 hp only).

SM-59 Piper PA-20 Specifications and Performance

09/30/2021Univair
Specifications and performance data for Piper PA-20 "125" and "135" airplanes.

VSP-62 Piper Inspection of Impulse Coupling Cam Assemblies

04/13/2022Univair
Addresses a potential for impulse coupling failure, which can result in total loss of engine power.