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Refer to figure or CAP 696 Figure 4.2.
A new 78 kg piece of equipment has been mounted on the exterior of the aircraft at station 970. Determine the moment created by this modification.

  • A

    87 204 kg in

  • B

    47 360 kg in

  • C

    310 400 kg in

  • D

    75 660 kg in

Refer to figure.
A moment is defined as the product of a mass and its balance arm (distance from a reference point).

  • Moment = Mass × Balance Arm

The mass is located at a station number of 970. According to the annex when a Body Station is between 747 to 1217, the Body Station is converted into a Balance Arm by adding 148 in. The Balance Arm of the new equipment will be:

  • Balance Arm = 970 in + 148 in = 1118 in

The moment of the new equipment will be:

  • Moment = 78 kg x 1118 in = 87 204 kg in

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