Track Deviation and Controlled Flight Toward Terrain

Late clearance changes occur often and during all phases of flight. Frequently, FMCs must be reprogrammed, and many types of deviations can result. Common problems stemming from a late clearance change include traffic conflicts, track and altitude deviations, unstable approaches, and go-arounds. Human factors that influence outcomes may also be present, such as increased workload and situational awareness.

A Caravan Captain received a late runway change when the preceding aircraft delayed on the runway. Events became rushed, and the situation deteriorated in IMC.

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Late clearance changes occur often and during all phases of flight. Frequently, FMCs must be reprogrammed, and many types of deviations can result. Common problems stemming from a late clearance change include traffic conflicts, track and altitude deviations, unstable approaches, and go-arounds. Human factors that influence outcomes may also be present, such as increased workload and situational awareness.

More on: https://asrs.arc.nasa.gov/publications/callback/cb_489.html

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