What are the steps involved in the In-Flight Calibration?
1.) In-air aircraft flight dynamic. Setting Optimum Alpha Angle (OAA), at a safe altitude for slow flight, reduce power (approximately pattern RPM or manifold setting). Put your airplane at minimum controllable airspeed able to hold altitude with FULL aileron and rudder authority. An example: you are at 5000 ft. practicing holding altitude, pull the stick/yoke back slowly while holding altitude no longer able to climb, NOT DESCENDING, still able to maintain complete aileron and rudder control. You need to identify the one particular flight criteria for your airplane of Optimum Alpha Angle (OAA). Identify the slowest you can fly comfortably, able to hold altitude (NOT DESCENDING) along with complete control of your airplane. Mechanical System: If you have the mechanical unit, the needle must be at the red/yellow junction when the aircraft is flown and held at OAA (Optimum Alpha Angle). If the needle is not at the red and yellow junction, land your airplane, reposition the probe forward