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Why do cargo loads need to be tied down?
  • A
    To maximise use of space and increase the aircraft’s maximum payload.
  • B
    To maintain adequate space in the hold in case of evacuation.
  • C
    To prevent them from moving and to stay within the aircraft’s CG limits.
  • D
    To maximise aircraft performance during take-off and landing.

Freight or cargo is secured in Unit Load Devices (ULDs), such as containers and pallets or restrained with nets as bulk cargo, to stop it shifting in flight, which may result in unplanned Centre of Gravity (CG) movement and stay within the aircraft’s CG limits.

Container ULDs have a specific shape and size depending on the dimensions of the fuselage. When the freight dimensions are unsuitable for container ULDs, pallets with load spreading bars are used and the freight is secured with a cargo net and covered with a fire containment blanket if required.

Shifting loads would affect the CG position, quite possibly causing an accident or damage to the airframe from inside.

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