Font size
WorksheetsAircraft Weighing Midterm
Total questions: 88
Worksheet time: 47mins
Who is typically responsible for filling out the aircraft weighing form?
Aviation engineers
Certified A&P mechanics
Maintenance technicians
All of the above
What is the main purpose of the weighing form?
To ensure accurate weight and balance data
To track fuel consumption
To log maintenance schedules
To record flight schedules
Why do manufacturers weigh only one out of every ten aircraft produced?
To test new equipment
To avoid damaging the aircraft
To reduce paperwork
To verify weight tolerances through sampling
What is issued to the remaining aircraft that are not physically weighed?
A maintenance log
A flight manual
A certificate of airworthiness
A computed weight & balance report
Is there a mandatory reweighing requirement for private aircraft?
Yes
No
What should be done if the original weight and balance records are lost for a private aircraft?
Ignore it
Use previous records
Estimate the weight
Reweigh the aircraft
Why might a private aircraft need to be reweighed after repainting?
To account for added weight
To check for damage
To verify the paint quality
To update the color
For an aircraft with an empty weight of 5,000 lb. or less, what is the permissible weight change?
1 pound or less
10 pounds or less
5 pounds or less
2 pounds or less
Why is it important to record weight changes above the permissible threshold for small aircraft?
To avoid damaging the aircraft
To update the aircraft's color
To reduce paperwork
To ensure accurate balance and performance
For aircraft weighing more than 5,000 lb. up to 50,000 lb., what is the permissible weight change?
5 pounds or less
10 pounds or less
1 pound or less
2 pounds or less
What is the Center of Gravity (CG)?
The point at which the aircraft's nose-heavy and tail-heavy moments are equal
The point at which the aircraft's wings are located
The point at which the aircraft's fuel tanks are located
The point at which the aircraft's weight is the heaviest
Why is it important to keep the CG within the manufacturer's specified operating range?
To improve the aircraft's appearance
To reduce fuel consumption
Why do larger aircraft (over 50,000 lb.) have a higher permissible weight change threshold?
They have more advanced technology
They are easier to balance
They are less likely to be repainted
They are less sensitive to small weight changes
Why is it important to avoid a nose heavy condition?
It can increase takeoff and landing distances
It can make the aircraft difficult to rotate during takeoff
It can reduce longitudinal stability
It can lead to over-rotation during takeoff
What does it mean for an aircraft to be tail heavy?
The aircraft is overweight
The CG is too far aft
The CG is too far forward
The aircraft is underweight
Why is it important to avoid a tail heavy condition?
It can increase takeoff and landing distances
What does it mean for an aircraft to be overweight?
The aircraft's total weight is below the minimum allowable gross weight
The CG is too far forward
The CG is too far aft
The aircraft's total weight exceeds the maximum allowable gross weight
What is the resulting moment when items are added forward of the datum?
(+) weight x (–) arm = (–) moment
(–) weight x (+) arm = (–) moment
(–) weight x (–) arm = (+) moment
(+) weight x (+) arm = (+) moment
What is the resulting moment when items are added to the rear of the datum?
(–) weight x (+) arm = (–) moment
(–) weight x (–) arm = (+) moment
(+ ) weight x (+) arm = (+) moment
(+ ) weight x (–) arm = (–) moment
What is the resulting moment when items are removed forward of the datum?
(a)
What is the resulting moment when items are removed rear of the datum?
(+) weight x (–) arm = (–) moment
(+) weight x (+) arm = (+) moment
Which of the following correctly describes the effect of adding weight to the rear of the datum?
(+) weight x (–) arm = (–) moment
(–) weight x (–) arm = (+) moment
(+) weight x (+) arm = (+) moment
(–) weight x (+) arm = (–) moment
What is the impact of improper loading on the aircraft's rate of climb and speed?
It reduces the rate of climb and speed
It makes the rate of climb and speed unpredictable
It has no effect on the rate of climb and speed
It increases the rate of climb and speed
How does improper loading affect fuel consumption?
It reduces fuel consumption
It increases fuel consumption
What is the impact of exceeding structural limits on an aircraft?
It has no effect on the structure
It has no effect on the structure
It causes excess wear and tear or complete failure
It makes the structure more durable
What is the impact of improper loading on take-off distance?
It has no effect on take-off distance
It reduces take-off distance
It increases take-off distance
It makes take-off distance unpredictable
How does improper loading affect the aircraft's maneuverability?
It makes the aircraft unstable and sluggish on the controls
It makes maneuverability unpredictable
It has no effect on maneuverability
It improves maneuverability
What is the normal force of gravity experienced in straight-and-level, unaccelerated flight?
(a)
How many pounds of force do the wings of a 4,000 lb aircraft experience in a 60° banked turn?
8,000 lb
6,000 lb
10,000 lb
4,000 lb
Why is it important to avoid exceeding structural limits during maneuvers?
To reduce maintenance costs
To improve fuel efficiency
To increase passenger comfort
To prevent structural stress and potential failure
What happens to the aircraft's effective weight as G-loads increase?
It decreases
It becomes unpredictable
It remains the same
It increases
Maintaining proper CG calculation and loading is important because:
It ensures safe and stable flight operations.
It increases fuel consumption.
It reduces aircraft speed.
It makes the aircraft look better.
Why is a stable approach and correct loading vital for safe landings?
To maintain pitch stability and stall margins
To prevent loss of control and aerodynamic stall
To ensure consistent and safe loading calculations
To improve fuel efficiency
What is the datum in aircraft weight and balance theory?
The point where the main landing gear touches the ground
An imaginary vertical plane or line perpendicular to the aircraft’s horizontal axis
The location of the heaviest component
The aircraft's center of gravity
Why is the datum important for weight and balance calculations?
It determines the maximum takeoff weight
It is used to calculate fuel consumption
It provides a reference point for measuring the location of all components and loads
It identifies the location of the main landing gear
How is the arm (distance from the datum) used in weight and balance calculations?
Arm = Moment ÷ Weight
Weight = Arm × Moment
Moment = Weight × Arm
Arm = Weight × Moment
Why is it important to know the exact location of the center of gravity (CG) relative to the datum?
To maximize passenger comfort
To ensure the aircraft is loaded within safe limits for stability and control
To increase fuel efficiency
To reduce maintenance costs
Where can the datum location be found for a specific aircraft model?
In the aircraft's maintenance manual
On the FAA's official website
In the aircraft's logbook
In the Type Certificate Data Sheet (TCDS)
What is the Type Certificate Data Sheet (TCDS)?
A document that records flight schedules
A passenger manifest
An FAA-issued document that contains the official design and performance specifications for a certified aircraft or aviation product
Why must an aircraft conform to the specifications listed in its TCDS?
To reduce maintenance costs
To be considered airworthy and safe to operate
To increase passenger comfort
To improve fuel efficiency
Why is it important that TCDS documents are publicly available on the FAA website?
To reduce paperwork
To ensure pilots, technicians, and inspectors can always refer to the most current and accurate data
To simplify pilot training
To improve the aircraft's appearance
What does it mean that TCDS are FAA-approved data?
They are suggestions for maintenance
They are used for marketing purposes
They are optional guidelines
They are legally binding and must be followed
What does the term "arm" refer to in aircraft weight and balance?
The vertical distance from the datum
The total moment of the aircraft
If an item is located 30 inches aft of the datum, what is the sign of its arm?
Undefined
Zero
Positive (+)
Negative (–)
An item located 15 inches forward of the datum would have what kind of arm?
+15 inches
Undefined
-15 inches
0 inches
Why is the sign of the arm important in aircraft calculations?
It affects the aircraft's center of gravity and balance
It is used only for cosmetic purposes
It changes the aircraft's speed
It determines the color of the aircraft
What is the datum in aircraft weight and balance?
The heaviest part of the aircraft
[Options not visible]
What is the correct formula for calculating moment in aircraft weight and balance?
Moment = Weight × Arm
Moment = Weight + Arm
Moment = Arm − Weight
Moment = Weight ÷ Arm
What does the moment represent in aircraft weight and balance?
The distance from the nose to the tail
The total weight of the aircraft
The vertical lift generated by the wings
The rotational force around the aircraft’s center of gravity
Why is it important to properly balance all moments in an aircraft?
To ensure the aircraft looks symmetrical
To reduce fuel consumption only
To maintain controllability, stall characteristics, and structural integrity
To increase the aircraft’s top speed
What unit is used to express moment in aviation?
A 50 lb bag is placed 100 inches aft of the datum. What is the moment?
500 lb-in
50 lb-in
150 lb-in
5,000 lb-in
If the same 50 lb bag is moved to 10 inches aft of the datum, what is the new moment?
5,000 lb-in
500 lb-in
What is the center of gravity (CG) in an aircraft?
The point where all the aircraft’s weight is considered to be concentrated
The location of the heaviest component
The point where the wings attach to the fuselage
The midpoint between the nose and tail
A forward CG typically causes the aircraft to be:
Tail-heavy and unstable
Nose-heavy and harder to pitch up
An aft CG can:
Increase stability
Make the aircraft easier to land
Improve stall recovery
Reduce stability and increase stall/spin risk
How is the CG calculated?
CG = Total Moment ÷ Total Weight
CG = Moment – Weight
CG = Total Weight ÷ Total Moment
CG = Arm × Weight
What is the center of pressure (CP) in an aircraft?
The point where the wings attach to the fuselage
The point where the total lift force is considered to act
The midpoint between the nose and tail
The location of the heaviest component
How does the center of pressure (CP) change with the angle of attack (AOA)?
It moves randomly
It remains fixed regardless of AOA
It moves forward as AOA increases and rearward as AOA decreases
It moves rearward as AOA increases and forward as AOA decreases
What happens if the CP moves too far forward?
The aircraft becomes more stable
The aircraft pitches up uncontrollably, leading to a stall
The aircraft becomes more fuel efficient
The aircraft flies faster
How does the relationship between the CG and CP affect aircraft stability?
If CP is ahead of CG, the aircraft may become unstable
If CP is ahead of CG, the aircraft is more stable
The relationship has no effect on stability
If CP is behind CG, the aircraft is less stable
What is the highest allowable weight of the aircraft, including fuel, passengers, cargo, and equipment, called?
Average weight
Minimum weight
Maximum weight
Empty weight
What is the maximum weight limit for a Landplane in the Normal category?
1800 lb
2200 lb
3000 lb
2550 lb
Zero fuel weight is the
dry weight plus the weight of full crew, passengers, and cargo.
basic operating weight without crew, fuel, and cargo.
maximum permissible weight of a loaded aircraft (passengers, crew, and cargo) without fuel.
When computing the maximum rearward loading CG of an aircraft, minimum weights, arms, and moments should be used for items of useful load that are located forward of the
rearward CG limit.
forward CG limit.
datum.
What FAA-approved document gives the leveling means to be used when weighing an aircraft?
Type Certificate Data Sheet.
AC 43.13-1B.
Manufacturer's maintenance manual.
If the empty weight CG of an airplane lies within the empty weight CG limits,
it is necessary to calculate CG extremes.
it is not necessary to calculate CG extremes.
minimum fuel should be used in both forward and rearward CG checks.
The maximum weight of an aircraft is the
Empty weight plus crew, maximum fuel, cargo, and baggage.
Empty weight plus crew, passengers, and fixed equipment.
Empty weight plus useful load.
An aircraft's LEMAC and TEMAC are defined in terms of distance
from the datum.
from each other.
ahead of and behind the wing center of lift, respectively.
When an aircraft is positioned for weighing on scales located under each landing gear wheel, which of the following may cause erroneous scale readings?
Gear down locks installed.
Parking brakes set.
To obtain useful weight data for purposes of determining the CG, it is necessary that an aircraft be weighed
in a level flight attitude.
with all items of useful load installed.
with no more than minimum fuel (1/12-gallon per METO horsepower) in all fuel tanks.
Large aircraft are required by regulations to be weighed periodically. Private aircraft are required to be weighed after making any alteration. Regarding the above statements,
neither No. 1 nor No. 2 is true.
only No. 1 is true.
only No. 2 is true.
When an empty aircraft is weighed, the combined net weight at the main gears is 3,540 pounds with an arm of 195.5 inches. At the nose gear, the net weight is 2,322 pounds with an arm of 83.5 inches. The datum line is forward of the nose of the aircraft. What is the empty CG of the aircraft?
151.1.
155.2.
146.5.
What tasks are completed prior to weighing an aircraft to determine its empty weight?
Remove all items except those on the aircraft equipment list; drain fuel and hydraulic fluid.
Remove all items on the aircraft equipment list; drain fuel, compute oil and hydraulic fluid weight.
Remove all items except those on the aircraft equipment list; drain fuel and fill hydraulic reservoir.
In the theory of weight and balance, what is the name of the distance from the fulcrum to an object?
Lever arm.
Balance arm.
Fulcrum arm.
If the reference datum line is placed at the nose of an airplane rather than at the firewall or some other location aft of the nose,
all measurement arms will be in negative numbers.
all measurement arms will be in positive numbers.
measurement arms can be either positive or negative numbers depending on the manufacturer's preference.
The empty weight of an airplane is determined by
adding the net weight of each weighing point and multiplying the measured distance to the datum.
subtracting the tare weight from the scale reading and adding the weight of each weighing point.
multiplying the measured distance from each weighing point to the datum times the sum of scale reading less the tare weight.
If it is necessary to weigh an aircraft with full fuel tanks, all fuel weight must be subtracted from the scale reading(s)
except minimum fuel.
including unusable fuel.
except unusable fuel.
When dealing with weight and balance of an aircraft, the term 'maximum weight' is interpreted to mean the maximum
weight of the empty aircraft.
weight of the useful load.
authorized weight of the aircraft and its contents.
Which of the following can provide the empty weight of an aircraft if the aircraft's weight and balance records become lost, destroyed, or otherwise inaccurate?
Reweighing the aircraft.
The applicable Aircraft Specification or Type Certificate Data Sheet.
The applicable flight manual or pilot's operating handbook.
In the process of weighing an airplane toward obtaining the CG, the arms from the weighing points always extend
parallel to the centerline of the airplane.
straight forward from each of the landing gear.
directly from each weighing point to the others.
When making a rearward weight and balance check to determine that the CG will not exceed the rearward limit during extreme conditions, the items of useful load which should be computed at their minimum weights are those located forward of the
forward CG limit.
datum.
rearward CG limit.
Which would have an effect on aircraft CG results when conducting a weight and balance check?
Leaving the parking brake on.
Leaving the parking brake off.
Leaving the downlocks installed.
Most modern aircraft are designed so that if all seats are occupied, full baggage weight is carried, and all fuel tanks are full, what will be the weight condition of the aircraft?
It will be in excess of maximum takeoff weight.
It will be at maximum basic operating weight (BOW).
It will be at maximum taxi or ramp weight.
What type of measurement is used to designate the arm in weight and balance computation?
Distance.
Weight.
Weight x distance.
When determining the empty weight of an aircraft, certificated under current airworthiness standards (14 CFR Part 23), the oil contained in the supply tank is considered
a part of the empty weight.
a part of the useful load.
the same as the fluid contained in the water injection reservoir.
The amount of fuel used for computing empty weight and corresponding CG is
empty fuel tanks.
unusable fuel.
the amount of fuel necessary for 1/2 hour of operation.
The useful load of an aircraft is the difference between
the maximum takeoff weight and basic empty weight.
maximum ramp or takeoff weight as applicable, and zero fuel weight.
the weight of an aircraft with all seats filled, full baggage/cargo, and full fuel, and (2) aircraft weight with all seats empty, no baggage/cargo, and minimum operating fuel
