Pilot Exam Coach

US Private Pilot

Switch to Canada PSTAR
Performance and weight and balanceQuestion 684 of 934

What is the arm in weight and balance?

  1. The weight of an item times its distance from the datum
  2. The vertical distance from the ground to the CG
  3. The distance between the forward and aft CG limits
  4. The horizontal distance from the datum to the item
Show answer

Correct answer: The horizontal distance from the datum to the item

The sign is plus if measured aft of the datum and minus if measured forward of it.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 10: Weight and Balance — Terms and Definitions, page 248

Practice performance and weight and balance

Questions last reviewed: 18 October 2026