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You are at the 'Bravo' holding point for Runway 28. What keyword (used by Air Traffic Control) indicates that you are permitted to taxi against the runway direction in order to line up at the start of the runway?

  • A

    The words 'line up'

  • B

    The word 'reverse'

  • C

    The word 'backtrack'

  • D

    The words 'enter, line up as required'

An aircraft backtracks on a runway when, after landing or before take-off, it moves along the runway in the opposite direction it is aligned with. This is typically to reach a taxiway or the departure end of the runway. This is done when there isn't a direct taxiway available to allow the aircraft to turn around or reach its desired location.

Looking at the answer options:

The words 'line up' --> INCORRECT. Line up indicates an instruction to enter the runway and to then only line up in the direction of departure.

The word 'reverse' --> INCORRECT.Reverse is not a standard phrase in aviation in this context.

The word 'backtrack' --> CORRECT.

The words 'enter, line up as required' --> INCORRECT. If a backtrack was approved by ATC, then that phrase would be used in the runway entry clearance. You would hear 'backtrack as required'.

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