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

Every 100 hours of flight operation

Answer

At every annual inspection regardless of changes

Answer

Whenever the aircraft changes registered ownership

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

To increase the aircraft's maximum certificated gross weight

Answer

To reduce fuel consumption by improving aerodynamic balance

Answer

To increase the structural integrity of the fuselage

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

To track fuel consumption and flight hours

Answer

To record passenger weights for each individual flight

Answer

To document scheduled maintenance and inspection intervals

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 the moment multiplied by 1,000 for greater precision

Answer

Moment index is the sum of all individual moments for the aircraft

Answer

Moment index is the CG expressed as a percentage of the mean aerodynamic chord

Question 5

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

Accepted Answer

Mean Aerodynamic Chord

Answer

Maximum Allowable Configuration

Answer

Moment Arm Calculation

Answer

Maximum Aircraft Capacity

Question 6

If an aircraft's CG is at 25% MAC, the LEMAC is at station 150, and the MAC is 80 inches long, what is the CG station?

Accepted Answer

Station 170

Answer

Station 160

Answer

Station 175

Answer

Station 180

Question 7

What is the FAA standard weight used for aviation gasoline (avgas) in weight and balance calculations?

Accepted Answer

6.0 lbs per gallon

Answer

5.0 lbs per gallon

Answer

6.7 lbs per gallon

Answer

7.5 lbs per gallon