Which statement about the trim system is true?

Which statement about the trim system is true?

• A. Trim is used to balance elevator forces.
• B. Trim balances aileron forces.
• C. Trim balances rudder forces.
• D. Trim balances flap position.

Answer: (A)

The main idea is that trim relieves the pilot from having to hold constant control forces by making a small automatic adjustment to the stabilizer to hold a chosen pitch attitude. In the DA20-C1, elevator trim changes the angle of the horizontal stabilizer, creating a moment that counteracts the nose-up or nose-down tendency produced by changes in power, airspeed, or gross weight. This is why trim is used to balance elevator forces. It doesn’t directly balance forces on the other control surfaces. Aileron trim is not the primary function here, and rudder trim, if present, is a separate adjustment and not the purpose of the main trim system. Flap position is controlled by a separate flap mechanism, not by the trim control. So, trim’s purpose is to reduce the effort needed to hold a steady pitch by balancing elevator forces, improving comfort and stability during flight.

The main idea is that trim relieves the pilot from having to hold constant control forces by making a small automatic adjustment to the stabilizer to hold a chosen pitch attitude. In the DA20-C1, elevator trim changes the angle of the horizontal stabilizer, creating a moment that counteracts the nose-up or nose-down tendency produced by changes in power, airspeed, or gross weight. This is why trim is used to balance elevator forces.

It doesn’t directly balance forces on the other control surfaces. Aileron trim is not the primary function here, and rudder trim, if present, is a separate adjustment and not the purpose of the main trim system. Flap position is controlled by a separate flap mechanism, not by the trim control.

So, trim’s purpose is to reduce the effort needed to hold a steady pitch by balancing elevator forces, improving comfort and stability during flight.