Ch 6 important notes

Question 1

Another important reason for concern about weight and balance is the efficiency of the aircraft. Improper loading reduces the efficiency of an aircraft from the standpoint of ceiling, maneuverability, rate of climb, speed, and fuel consumption

Question 2

If an airplane is loaded in such a way that it is extremely nose heavy, higher than normal forces are exerted at the tail to keep the airplane in level flight.

Question 3

he higher than normal forces at the tail create additional drag, which requires additional engine power and therefore additional fuel flow to maintain airspeed.

Question 3

The weight and balance report identifies the empty weight of the aircraft and the location at which the aircraft balances, known as the center of gravity (CG).

Answer 3

IMPORTANT

Question 4

The weight and balance report must include an equipment list showing weights and moment arms of all required and optional items of equipment included in the certificated empty weight.

Question 5

As an alternative, the manufacturer is permitted to weigh an agreed upon percentage of a particular model of aircraft produced, perhaps 10 to 20 percent, and apply the average to all the aircraft.

Answer 5

IMPORTANT

Question 6

For a small, GA airplane being used privately, such as a Cessna 172, there is no FAA requirement that it be periodically reweighed; but after each annual, the mechanic must ensure that the weight and balance data in the aircraft records is correct.

Answer 6

This depends on the type of aircraft and how its used

Question 7

If the weight and balance report for an aircraft is lost, the aircraft must be weighed and a new report must be created.

Answer 7

IMPORTANT

Question 8

When an aircraft has undergone extensive repair, major alteration, or has new equipment installed, such as a radio or a global positioning system, a new weight and balance report must be created.

Question 9

The distance from this datum is measured in inches and can be either positive or negative depending upon where the equipment is located in relation to the datum.

Answer 9

IMPORTANT

Question 10

The most important reason for weighing an aircraft is to find out its empty weight (basic empty weight) and to find out where it balances in the empty weight condition.

Question 10

The location of the datum is identified in the Aircraft Specifications or Type Certificate Data Sheet (TCDS).

Answer 10

IMPORTANT

Question 11

The algebraic sign of the moment, based on the datum location and whether weight is being installed or removed [Figure 6-3], would be as follows on page 224:

• Weight being added aft of the datum produces a positive moment (+weight, +arm).
• Weight being added forward of the datum produces a negative moment (+weight, -arm).
• Weight being removed aft of the datum produces a negative moment (-weight, +arm).
• Weight being removed forward of the datum produces a positive moment (-weight, -arm).

Answer 11

IMPORTANT

Question 12

The aircraft should be weighed inside a hangar where wind cannot blow over the surface and cause fluctuating or false scale readings.