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According to the Flight Manual, the Maximum Structural Mass of your aircraft is 3200 lb, which may be increased by 25 lb for taxiing. You are flying above the desert, and the performance charts restrict the Maximum All Up Mass (MAUM) to 3100 lb. What is the value of the Regulated Take-off Mass (RTOM)?

  • A

    3200 lb

  • B

    3100 lb

  • C

    3125 lb

  • D

    3225 lb

The Regulated Take-off Mass (RTOM) is the lowest of the:

  • Performance Limited Take-off Mass (PLTOM) and
  • Maximum Structural Take-off Mass (MSTOM)

and it is the maximum mass at which the aircraft is able to depart from an airport in the given ambient conditions.

Therefore, the RTOM is 3100 lb.

Note: Ignore the taxi fuel of 25 lbs. It is not a factor when considering take-off masses as it is already burnt at that stage.

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