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Refer to figure.
Given the following information, what is the Total Ramp Mass, if a small auxiliary tank is attached to the helicopter with 100 l of additional fuel?

APSW: 5210 lb
Pilot: 187 lb
Fuel (normal tanks): 1120 lb
Fuel (large auxiliary tank): 550 lb
Front row passengers: 400 lb
Aft row passengers: 380 lb
Fwd baggage: 150 lb
Aft baggage: 80 lb
Specific Gravity: 0.79

  • A

    8177 lb

  • B

    8251 lb

  • C

    8077 lb

  • D

    8156 lb

Refer to figure.
APSW (Aircraft Prepared For Service Weight) is an older definition which is the BEM (Basic Empty Mass).

Use the Load sheet writing in the numbers in the boxes on the left, working from top to bottom:

  • DOM = APWS 5210 lb + Pilot 187 lb = 5397 lb
  • Fuel = Normal tank 1120 lb + Large Aux tank 550 lb + Small Aux tank 174 lb (100 l x 0.79 x 2.2) = 1844 lb
  • Operating Mass = DOM 5397 lb + Fuel 1844 lb = 7241 lb
  • Payload = Front row PAX 400 lb + Aft row PAX 380 lb + Fwd baggage 150 lb + Aft baggage 80 lb = 1010 lb
  • Total Ramp Mass = Payload 1010 lb + Operating weight 7241 lb = 8251 lb

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