Pressure Cowls for all PT6 Air Tractors and Thrush Aircraft. Balanced Mount/Pressure Cowls for Thrush. Reduce ITT 35 to 70 degrees. Reduce fuel consumption. Save on Hot Section Inspections. Easy access to service fuel nozzles & air filter. Reduce NG 1 to 3%. Make your -15 perform like a -34. ELIMINATE ONGOING AIR FILTER PURCHASES! Please contact Cascade Aircraft Conversions at 509-635-1212 or email@example.com.