Definition
A pilot action that uses the airplane's pitch trim system to relieve control pressure in a direction that lowers the nose of the airplane. Adjusting the trim wheel, switch, or crank in the nose-down direction repositions the trim tab (or equivalent device) so that the airplane naturally seeks a lower pitch attitude without the pilot having to hold forward pressure on the control wheel or stick.
Plain English
Setting the trim so the airplane wants to point its nose downward on its own, instead of you having to push forward on the controls to keep it there.
Context Anchor
Seen during stall recovery and other maneuvers where the airplane’s nose position and control pressures must be managed carefully.
Derivation
‘Trim’ comes from Old English ‘trymman’ meaning to make ready or set in order — in flying it means setting the controls so the airplane stays where you want without constant effort. ‘Nose-down pitch’ describes the airplane rotating around its lateral (wingtip-to-wingtip) axis so the nose moves toward the ground.
Why Pilots Care
Reduces pilot workload and prevents fatigue during recovery from a stall or unusual attitude.
Intuition Check
Trim does not mean the pilot is flying the airplane with trim alone. It means adjusting the airplane’s balance so the controls are not fighting the desired nose position.
Example Sentence 1
After reducing the angle of attack, the pilot applied a small amount of trim nose-down pitch to relieve the forward control pressure during the recovery.
Example Sentence 2
Once the stall is recovered, trim nose-down pitch is applied to establish and maintain the recommended descent speed.