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A 500 kg box is loaded into an aircraft's hold, which has a maximum permitted floor loading of 730 kg/m². What is the minimum floor contact area necessary to make sure that the maximum floor loading is not exceeded?

  • A

    6.8 m²

  • B

    0.65 m²

  • C

    1.42 m²

  • D

    0.69 m²

Minimum floor contact area can be calculated by:

  • Box mass / maximum floor load 
  • 500 kg / 730 kg/m² = 0.6849 m2 required

Note: There is feedback that the correct answer is actually given as 0.68 m2, although this would overload the aircraft's flooring. If you see this question in your own exam then please let us know any details…

With these questions, a good knowledge of the following formula is required:

  • Mass = Floor load x Area
  • Area = Mass / Floor load
  • Floor load = Mass / Area

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