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EN ATPL Mass and Balance Questions in English
Practise Mass and Balance
Using the annex, retain the corrected dry operating mass of 110100 kg and corrected basic index of 118.6. Fuel remains 72000 kg with a fuel index correction of +8. Use 75 kg per passenger. The actual cargo loads are: compartment1 empty; compartment2 1000 kg; compartment3 3000 kg; compartment4 2000 kg; compartment5 1000 kg. Passengers are: OA20, OB20, OC30. Which listed value is closest to the take-off CG obtained from the graphical sheet, in percent MAC?
Knowing that: Dry operating mass: 110000 kg. Basic index: 119.1. Number of passengers: 185 distributed as shown in the annex (75 kg per PAX). Cargo load + luggage: 14000 kg distributed as shown in the annex. Fuel: 42000 kg (Fuel shift -20). Stages (1) to (7) and (11) having already been calculated, the centre of gravity in % MAC (Mean Aerodynamic Chord) at take-off is located at:
Allowed traffic load is the difference between:
When has the centre of gravity to be computed?
In determining the Dry Operating Mass of an aeroplane it is common practice to use 'standard mass' values for crew. These values are
Given: Maximum structural take-off mass= 146 900 kg Maximum structural landing mass= 93 800 kg Maximum zero fuel mass= 86 400 kg. Trip fuel= 27 500 kg. Block fuel= 35 500 kg. Engine starting and taxi fuel = 1 000 kg. The maximum take-off mass is equal to:
The empty mass of an aeroplane is given as 44800 kg. Operational items (including crew standard mass of 1060 kg) are 2300 kg. If the maximum zero fuel mass is given as 65500 kg, the maximum traffic load which could be carried is:
An aeroplane is to depart from an airfield where the performance limited take-off mass is 89200 kg. Certificated maximum masses are as follows: Ramp (taxi) mass 89930 kg Maximum Take-off mass 89430 kg Maximum Landing mass 71520 kg Actual Zero fuel mass 62050 kg Fuel on board at ramp: Taxi fuel 600 kg Trip fuel 17830 kg. Contingency, final reserve and alternate 9030 kg. If the Dry Operating Mass is 40970 kg the traffic load that can be carried on this flight is
Calculate the centre of gravity in % MAC (mean aerodynamic chord) with following data: Distance datum - centre of gravity: 12.53 m. Distance datum - leading edge: 9.63 m Length of MAC: 8 m
The mass of an aircraft is 1950 kg. If 450 kg is added to a cargo hold 1.75 metres from the loaded centre of gravity (cg). The loaded cg will move:
