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An EGPWS caution alert is heard in the cockpit. The time left for the pilot to respond before hitting terrain is…

  • A
    10 to 20 seconds.
  • B
    20 to 30 seconds.
  • C
    25 to 35 seconds.
  • D
    40 to 60 seconds.

ENHANCED GROUND PROXIMITY WARNING SYSTEM (EGPWS)
The EGPWS is a Terrain Awareness and Alerting system providing terrain alerting and display functions with additional features. The EGPWS uses aircraft inputs including geographic position, attitude, altitude, ground speed, vertical speed and glideslope deviation. The EGPWS is an ENHANCED GPWS that has its own world terrain database. Whereas GPWS is only aware of the ground below it, EGPWS is aware of a larger area.

  • The terrain alerting function of the EGPWS generates a caution alert, which leaves the pilot with a response time between 40 to 60 seconds, followed by a warning, which gives the pilot between 20-30 seconds to react.

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