PPL PPL Weight and Balance 2

Question 1

How is center of gravity (CG) location calculated?

Accepted Answer

Total moment divided by total weight

Answer

CG location = Total Moment ÷ Total Weight; this gives the distance of the CG from the datum in inches.

Question 2

What is the standard weight of engine oil per US gallon for weight and balance purposes?

Accepted Answer

7.5 pounds

Answer

Engine oil weighs 7.5 pounds per gallon, which is heavier than avgas (6.0 lbs/gal) but lighter than water (8.33 lbs/gal).

Question 3

If an aircraft is loaded beyond its maximum certificated gross weight, what is a primary safety concern?

Accepted Answer

Structural limits may be exceeded and performance will be significantly degraded

Answer

Exceeding maximum gross weight can overstress the airframe (especially in turbulence or maneuvers), increase stall speed, reduce climb rate, and extend takeoff and landing distances.

Question 4

What does the CG envelope on a loading graph represent?

Accepted Answer

The approved combinations of aircraft weight and CG location for safe flight

Answer

The CG envelope defines all allowable combinations of total weight and CG location; operating outside this envelope is outside the aircraft's certification and is unsafe.

Question 5

An aircraft loaded with a forward CG typically requires the pilot to do what during cruise flight?

Accepted Answer

Apply back pressure or nose-up trim to maintain level flight

Answer

A forward CG creates a nose-heavy condition requiring constant back pressure or up-elevator trim to maintain level flight, which also increases drag.

(PPL) Private Pilot Licence Practice Test

(PPL) Private Pilot Licence Practice Test

PPL PPL Weight and Balance 2