Trim - P-8210033

BASIC INSTRUMENT PROCEDURES

CHAPTER ONE

deviations, and large corrections. By mastering scan shift, error detection is faster

because less time elapses between glances at a specific instrument. Deviations are

smaller; and since subsequent corrections are smaller, you become smoother.

It is often necessary to compare the indications of one performance instrument against

another before knowing when or how much to change attitude or power. An effective

scan technique may require that the attitude indicator be scanned between glances at

the performance instruments being compared (Figure 1-8).

Trim

During the BI events, the student will have the opportunity to fly the T-2 simulator

through a range of maneuvers and transitions. Proper trim technique makes this task

infinitely more manageable. The aircraft is considered to be correctly trimmed when

it is maintaining the desired attitude with all control pressures neutralized. By

relieving all control pressures, the pilot will find that it is much easier to hold a given

attitude. In this condition, more attention can be devoted to the performance and

position instruments, and additional cockpit duties. Proper trim technique is essential

for smooth and precise aircraft control during all phases of flight.

Establish an attitude and power setting on the control instruments. This will result in

a desired performance. Maintain this attitude. Trim until control pressures are

neutralized. The aircraft should be trimmed for coordinated flight by first trimming

the rudder to maintain a centered ball in the turn and slip indicator, followed by the

wings, and finally the elevator. Quickly "click" the trim switch to prevent running in

too much trim at one time. The lighter the pilot's touch on the stick, the more

sensitive the pilot is to trim requirements. This is an absolute requirement for "hands-

off" trim. Changes in attitude, power, or configuration may require a trim adjustment.

Smooth and precise attitude changes are best attained by a combination of control

pressures and trim adjustments.

NOTE

Use of trim alone to change the aircraft attitude will lead to erratic

aircraft control.

BASIC INSTRUMENT PROCEDURES 1-21