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The maximum mass to which an aeroplane may be loaded, prior to engine start, is…

  • A

    maximum certificated taxi (ramp) mass.

  • B

    maximum regulated taxi (ramp) mass.

  • C

    maximum regulated take-off mass.

  • D

    maximum certificated take-off mass.

Looking at the answers:

'Maximum certificated taxi (ramp) mass' --> CORRECT. This is the structural limit on the ramp and includes the total block fuel. This is the heaviest an aircraft can ever be.

'Maximum regulated taxi (ramp) mass' --> INCORRECT. This mass DOES NOT exist. Regulated masses only apply to Take-off and Landing, as here we must compare the structural limitation to the performance limit. There is no performance consideration when parked on stand or taxiing.

'Maximum regulated take-off mass' --> INCORRECT. Not the absolute heaviest the aircraft can be, as start & taxi fuel is already burnt.

'Maximum certificated take-off mass' --> INCORRECT. Again, not the absolute heaviest the aircraft can be, as start & taxi fuel is already burnt.

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