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By David Kaminski-Morrow2021-04-21T10:32:00+01:00
Pilots of a Singapore Airlines Boeing 777-300ER inadvertently entered an incorrect waypoint altitude constraint prior to departure, resulting in several alerts from the ground-proximity warning system as the aircraft climbed out of Shanghai Pudong.
The take-off runway assigned had been changed from 34L to 35R which meant the aircraft’s standard departure route switched from HSN 22X to HSN 12X.
This required updating the flight-management computer with the new departure route. The first waypoint on this route, identified as PD062, did not have any speed or altitude crossing constraint which meant the field on the computer’s route display was blank.