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Refer to figure.
Using the extract from the aeroplane manual, as well as the following information:

Empty weight 1490 lbs, CG 84.7”,
Pilot and instructor 250 lbs located at 77.8”,
Fuel 180 lbs located at 93”.

Which of the following is correct? The aeroplane…

  • A

    May be operated in the utility category

  • B

    May only be operated in the normal category

  • C

    Is outside of the certified weight and CG limits

  • D

    Exceeds the maximum baggage capacity for the utility category

Refer to figure.
Useful formulae:

  • Mass x Arm = Moments
  • Total Moments / Total Mass = Centre of Gravity

Step 1: We need to calculate the Mass and CG of the total aircraft. 

 

Mass

Arm

Moments

Empty Weight

1490

84.7

126 203

Pilot and Instructor

250

77.8

19 450

Fuel

180

93

16 740

Total 

1920

84.6

162 393

Step 2: We need to plot in the given figure to determine the category of the flight.

  • Draw a line horizontally across from the total mass of 1920 lbs
  • Draw a line vertically up from a CG position of 84.6
  • The 2 lines intercept in the Utility Category

Your Notes (not visible to others)



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