# Chapter 6 - Weight and Balance - Oral Questions Flashcards

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

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

If all the records for an aircraft are missing, how would you determine the empty weight and empty weight C.G. ?

Aircraft would have to be re-weighed and new weight and balance records would have to be prepared

Define “tare weight” and describe how it is handled when weighing an aircraft

Tare weight is the weight of anything on the scales that is not part of the aircraft. It must be subtracted from the scale weight reading to determine the net weight of the airplane

If a piece of equipment such as a radio is added to an aircraft, how can you determine the effect on weight and balance without re-weighing the aircraft?

A new weight and C.G. location can be determined by computation (the action of mathematical calculation)

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

maximum safety

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

Datum is an imaginary vertical plane at right angles to the longitudinal axis of the airplane. It is the reference point from which all horizontal measurements are taken

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

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

What are two ways of determining the moment of an item of equipment?

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

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

Add weight

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

Remove weight

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

Remove weight

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

Add weight

How does the category of an aircraft affect its loaded weight?

Aircraft certificated in more than one category such as normal and aerobatic, may have two different maximum gross weights and different useful loads

What should be done with equipment that is not permanently installed and recorded on the equipment list when weighing an aircraft?

remove from aircraft

define the term “residual fuel”

Any fuel that remains in the tanks, lines, and engines after the system has been drained