Improve Performance at Time of Overhaul
Penn Yan Aero recommends these time tested, FAA Approved STCs. And, the best time to add one of these STCs is at overhaul time. They’re an excellent way to improve your aircraft, add to its value, and increase your flying pleasure.

RAM160
For Piper Cherokee Models PA-28-140 & PA-28-151 or Cessna 172 Models I, J, K, L, & M
Add the RAM 160 STC to your Penn Yan Aero overhaul and enjoy the benefits of 160 horsepower. This is the least expensive horsepower increase available. Click Here To Select Your RAM 160 Aircraft Application and Get a Quote

DeltaHawk
For Cessna 172 Model N
Increase the safety and value of your Cessna 172N by installing a O-320-D2J or O-320-D2G engine in place of the O-320-H2AD. You’ll enjoy an increase in gross weight capacity of 100 pounds and the added safety of two separate magnetos. Click Here To Select Your DeltaHawk Aircraft Application and Get a Quote

SuperHawk
Increase your flying pleasure and the value of your 1968 - 1986 Cessna 172 Models I, K, L, M, N, and P with 180 Horsepower.


The SuperHawk STC allows for the conversion (via Penn Yan Aero overhaul) or replacement (with a Lycoming factory new engine) of your 150 or 160 horsepower O-320-E2D, O-320-D2J, or O-320-H2AD engine with a 180 horsepower O-360-A4M engine. The STC includes a new Sensenich propeller, STC paperwork, and all of the hardware needed to complete the conversion which will add about 25 hours to the normal removal and installation time.With full fuel and two adults, the standard 172 doesn't carry much, maybe a couple of light overnight bags and that's it. The limited performance can be a concern when taking off from a short strip with a full load on a hot summer day. Before you sell your 172, consider upgrading it to 180 horsepower with our SuperHawk STC. Click Here To Select Your SuperHawk Aircraft Application and Get a Quote

Test results from the Penn Yan Aero Cessna 172 test plane showed an increased cruise speed to 151 mph; a decreased takeoff distance to 400 feet (700 feet with a gross weight of 2,400 lbs.); an increased rate of climb to 1,020 feet with gross weight at 2,400 lbs.; a ceiling of 19,500 feet; and a gross weight capacity increase up to 2,550 lbs.