4. 30 Flashcards
(30 cards)
When preparing to carry out the weighing procedure on an aircraft, which of the following is not required?
drain all engine tank oil.
An aircraft is weighed prior to entry into service. Who is responsible for deriving the Dry Operational Mass from the weighed mass by the addition of the ‘operational items’ ?
The Operator.
An aircraft may be weighed
in an enclosed, non-air conditioned, hangar.
At reference or see Loading Manual MRJT 1 Figure 4.11.
An aeroplane has a landing mass of 53 000kg. The range of safe CG positions, as determined from the appropriate graph in the loading manual, is :
Forward limit 7.8% MAC aft limit 27.0% MAC
At reference or see Loading Manual MRJT 1 Figure 4.11.
The aeroplane has a mass of 61 000 kg in the cruise. The range of safe CG positions, as determined from the appropriate graph in the loading manual, is:
forward limit 8.3% aft limit 26.3% MAC
At reference or see Loading Manual MRJT 1 Figure 4.9.
For the transport aeroplane the moment (balance) arm (B.A.) for the forward hold centroid is:
367.9 inches.
Which of the following is unlikely to have any effect on the position of the centre of gravity on an aeroplane in flight ?
Changing the tailplane (horizontal stabiliser) incidence angle.
At reference or see Loading Manual MRJT 1 Figure 4.9.
Referring to the loading manual for the transport aeroplane, the maximum running load for the aft section of the forward lower deck cargo compartment is:
13.12 kg per inch.
At reference or see Loading Manual MRJT 1 Figure 4.9.
Referring to the loading manual for the transport aeroplane, the maximum load intensity for the lower forward cargo compartment is:
68 kg per square foot.
The maximum floor loading for a cargo compartment in an aeroplane is given as 750 kg per square metre. A package with a mass of 600 kg. is to be loaded. Assuming the pallet base is entirely in contact with the floor, which of the following is the minimum size pallet that can be used ?
40 cm by 200 cm
The maximum intensity floor loading for an aeroplane is given in the Flight Manual as 650 kg per square metre. What is the maximum mass of a package which can be safely supported on a pallet with dimensions of 80 cm by 80 cm?
416.0 kg
The distance from the datum to the Centre of Gravity of a mass is known as
the moment arm or balance arm.
At reference or see Loading Manual MRJT 1 Figure 4.9.
A pallet having a freight platform which measures 200 cm x 250 cm has a total mass of 300 kg. The pallet is carried on two ground supports each measuring 20 cm x 200 cm. Using the loading manual for the transport aeroplane, calculate how much mass may be added to, or must be off loaded from, the pallet in order for the load intensity to match the maximum permitted distribution load intensity for lower deck forward cargo compartment.
285.5 kg may be added.
During take-off you notice that, for a given elevator input, the aeroplane rotates much more rapidly than expected. This is an indication that:
the centre of gravity may be towards the aft limit.
Dry Operating Mass is the mass of the aircraft less
usable fuel and traffic load.
The total mass of the aeroplane including crew, crew baggage; plus catering and removable passenger equipment; plus potable water and lavatory chemicals but excluding usable fuel and traffic load, is referred to as:
Dry Operating Mass.
The responsibility for determination of the mass of ‘operating items’ and ‘crew members’ included within the Dry Operating Mass lies with
the operator.
If the centre of gravity is near the forward limit the aeroplane will:
require elevator trim which will result in an increase in fuel consumption.
The Dry Operating Mass is the total mass of the aircraft ready for a specific type of operation but excluding
usable fuel and traffic load.
The Take-off Mass of an aeroplane is 66700 kg which includes a traffic load of 14200 kg and a usable fuel load of 10500 kg. If the standard mass for the crew is 545 kg the Dry Operating Mass is
42000 kg
When the centre of gravity is at the forward limit, an aeroplane will be:
extremely stable and will require excessive elevator control to change pitch.
An aeroplane must be re-weighed at certain intervals. Where an operator uses ‘fleet masses’ and provided that changes have been correctly documented, this interval is
9 years for each aeroplane.
A flight benefits from a strong tail wind which was not forecast. On arrival at destination a straight in approach and immediate landing clearance is given. The landing mass will be higher than planned and
the landing distance required will be longer.
At reference or see Loading Manual MRJT 1 Figure 4.9.
From the loading manual for the jet transport aeroplane, the maximum floor loading intensity for the aft cargo compartment is :
68 kg per square foot.
