PPL PPL Weight and Balance

Question 1

What is the standard weight of aviation fuel (100LL) per US gallon used in weight and balance calculations?

Accepted Answer

6.0 pounds

Answer

6.7 pounds

Answer

7.5 pounds

Answer

8.33 pounds

Question 2

In weight and balance, what is the 'datum'?

Accepted Answer

An imaginary vertical reference plane from which all arm measurements are taken

Answer

The total weight of all items loaded in the aircraft

Answer

The point at which the aircraft physically balances when suspended

Answer

The maximum weight the aircraft structure can safely carry

Question 3

What is a 'moment' in weight and balance calculations?

Accepted Answer

The weight of an object multiplied by its arm (distance from datum)

Answer

The total weight of the aircraft at takeoff

Answer

The distance from the datum to the center of gravity

Answer

The maximum load that can be placed at a given station

Question 4

What effect does an aft (rearward) center of gravity beyond limits have on longitudinal stability?

Accepted Answer

Decreases longitudinal stability and can make recovery from a stall difficult or impossible

Answer

Increases pitch stability and makes stall recovery easier

Answer

Has no significant effect on aircraft stability

Answer

Increases the aircraft's stall speed

Question 5

'Useful load' is defined as the difference between which two weights?

Accepted Answer

Maximum gross weight and basic empty weight

Answer

Maximum ramp weight and maximum takeoff weight

Answer

Zero fuel weight and maximum landing weight

Answer

Operating empty weight and payload weight

Question 6

A forward CG condition beyond limits primarily causes which problem?

Accepted Answer

Insufficient elevator authority to raise the nose for landing flare

Answer

Increased lateral stability and improved roll control

Answer

Higher cruise speeds due to reduced induced drag

Answer

Improved spin recovery characteristics

Question 7

Which document specifies the approved CG limits and weight and balance data for a specific aircraft?

Accepted Answer

The Pilot's Operating Handbook (POH) / Airplane Flight Manual (AFM)

Answer

The Aeronautical Information Manual (AIM)

Answer

The Airport/Facility Directory (Chart Supplement)

Answer

FAR Part 91