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The centre of gravity limits of an aircraft are between 92 and 100 in aft of the datum. The centre of gravity is 5 in behind the aft limit. To move the CG to the aft limit, 950 kg is removed from the aft baggage compartment, which is located 200 in behind datum. What is the aircraft NEW weight?
  • A
    19 000 kg
  • B
    18 050 kg
  • C
    19 950 kg
  • D
    20 900 kg

To solve this question, use the following formula:
Mass Change / New total mass = Change CG position / Distance from mass to old CG

  • Mass change: 950 kg

  • New total mass: ?

  • Change CG position: from 105 in to 100 in => 5 in

  • Distance from mass to old CG: (200 – 105) = 95 in

950 kg / New total mass = 5 in / 95 in
New total mass = (950 kg x 95 in) / 5 in
New total mass = 18 050 kg

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