April 2016 Issue

Pitch Trim Principles

Once we relieve any control pressures, the airplane is trimmed for that airspeed, which has implications for takeoff, cruise and—especially—go-arounds.

An airplane will seek the indicated airspeed for which it is trimmed. We might call this “the principle of trim,” and it is the basis for pitch stability and airplane control. If you understand this basis, you can predict an airplane’s response to just about any change in power, control input, autopilot command and even wind shear.

To continue reading this entire article you must be a paid subscriber.

Subscribe to Aviation Safety

The monthly journal of risk management and accident prevention, is packed with useful, timely information on basic and advanced technique, accident analysis and, most important, practical articles on how you can develop the judgment that will keep you in the air and out of the NTSB's files.

Already subscribe but haven't registered for all the benefits of the website? Click here.

Subscriber Log In

Forgot your password? Click Here.