Weight And Balance

Question 1

Why is control of the weight and balance of an aircraft important

Answer 1

For safety and efficiency

Question 2

What is meant by tare weight

Answer 2

chocks and other items that are used to hold the aircraft on the scales.

Question 3

What must be done with tare weight when an aircraft is weighed?

Answer 3

subtracted from the scale reading to find the weight of aircraft

Question 4

If the aircraft is loaded so that the aft C.G limit is exceeded what undesirable flight characteristic is likely to result?

Answer 4

The aircraft will be tail-heavy and may be unable to recover from a stall or spin

Question 5

If records from an aircraft is missing how would you determine the empty weight and empty weight C.G?

Answer 5

The aircraft has to be weighed and new weight and balance records have to be done

Question 6

Where do you find the leveling means that are specified for a particular aircraft

Answer 6

Type certificate data sheet for the aircraft

Question 7

What is included in the empty weight of an aircraft?

Answer 7

Airframe, engines, all operating equipment, usable fuel, engine lubricating oils, hydraulic fluids, fixed ballast, full reservoirs, and any equipment that is permanently installed in the aircraft.

Question 8

What is the datum of an aircraft and what is its function?

Answer 8

A reference line given by the manufacturer measured in inches to locate items or points in the aircraft

Question 9

What is moment and how do you find the moment of an item installed in an aircraft?

Answer 9

is a force that try’s to cause rotation.

its found by multiply the weight by its arm

Question 10

What are two ways to determine the arm of an item of equipment

Answer 10

Measure the distance between the item and the datum, or use data supplied by manufacturer

Question 11

How do you determine the moment of an item of equipment.

Answer 11

Multiply by its arm, which is the distance between the item and the datum

Question 12

What should be done to obtain a positive (plus) moment aft of the datum?

Answer 12

Add weight

Question 13

Is there a federal regulation required that all private aircraft be reweighed periodically

Answer 13

No

Question 14

What should be done to obtain a negative (minus) moment aft of the datum?

Answer 14

Remove weight

Question 15

How does the category of an aircraft affect it’s loaded weight?

Answer 15

May have two different maximum gross weights and different useful loads

Question 16

As you prepare an aircraft for weighing you determine that there is equipment aboard that is not permanently installed and recorded on the equipment list. What should you do with the equipment.

Answer 16

It all should be removed from the aircraft

Question 17

What is meant by the maximum zero fuel weight of an aircraft?

Answer 17

The maximum allowable weight of a loaded aircraft with out fuel

Question 18

Define “residual fuel”

Answer 18

Any fuel that can’t be drained and stays in the system

Question 19

Define “residual oil”

Answer 19

Any oil left in the tanks after draining, tanks, lines, and engines,

Question 20

Define Mean Aerodynamic Chord or MAC

Answer 20

Is the chord drawn through the center of the wing plan area

Question 21

Describe two most common ways of showing the C.G. Location and or C.G. range.

Answer 21

In inches from the datum or in percent of MAC

Question 22

What is the purpose of an aircraft loading graph

Answer 22

determines how to distribute the load to keep the C.G. within allowable limits

Question 23

What is ballast, and why would you use it in an airplane?

Answer 23

Ballets is weight added to an airplane it brings the C.G. Into allowable range.

Question 24

Installation of several new radios in the nose of an aircraft causes the forward C.G. Limit to be exceeded. How can you correct this problem without removing the new equipment

Answer 24

Ballast may be installed in the tail to move the C.G. Aft

Question 25

How does the C.G. Range of a helicopter compare to that of a fixed-wing airplane?

Answer 25

Helicopters typically have a smaller C.G. range.

Question 26

Where are leveling instructions found, and describe one method of leveling an aircraft

Answer 26

found in the type certificate data sheet.

leveled by using a spirt level at specific points

Question 27

How should you account for fuel when weighing an aircraft to determine weight and balance?

Answer 27

drain the fuel system until only unusable fuel remains, or fill the tank full and subtract out the weight of useable fuel.

Question 28

When should an aircraft be reweighed

Answer 28

After repairs or alterations that change its weight or center of gravity

Question 29

What is minimum fuel and how is it calculated for weight and balance purposes

Answer 29

amount required to operate at maximum power for 30 minutes.

METO horsepower divided by 2