A&P Aircraft Weight & Balance 3

Question 1

When is an aircraft required to be re-weighed per FAA regulations?

Accepted Answer

After major repairs or alterations that may have altered the aircraft's weight and balance

Answer

FAA regulations require re-weighing after major repairs or alterations that could affect the aircraft's weight and balance data, to ensure records remain accurate.

Question 2

What is the primary purpose of installing ballast on an aircraft?

Accepted Answer

To shift the CG to within the approved limits

Answer

Ballast is added weight installed in a specific location to shift the CG into the approved range when the aircraft would otherwise be out of limits.

Question 3

What is the function of the aircraft weight and balance record?

Accepted Answer

To document all alterations and repairs that affect weight and balance, reflecting the current configuration

Answer

The weight and balance record provides a running history of all repairs, alterations, and equipment changes so that the aircraft's current empty weight and CG are always known.

Question 4

How does a moment index differ from a standard moment?

Accepted Answer

Moment index is the moment divided by a reduction factor (e.g., 100 or 1,000) to simplify calculations

Answer

Moment index is a moment divided by an arbitrary reduction factor (commonly 100 or 1,000) to reduce the magnitude of numbers and make manual weight and balance computations more manageable.

Question 5

What does the abbreviation MAC represent in aircraft weight and balance?

Accepted Answer

Mean Aerodynamic Chord

Answer

MAC (Mean Aerodynamic Chord) is the chord of an imaginary airfoil that represents the aerodynamic properties of the entire wing, commonly used on large aircraft to express CG as a percentage.

A&P - Certified Aircraft Mechanic Practice Test

A&P - Certified Aircraft Mechanic Practice Test

A&P Aircraft Weight & Balance 3