Flight EK521 go-around incident (plane destroyed) points to pilot forgetting to push throttle fully forward

Just 10s elapsed between the sounding of a cockpit alarm, which appears to have triggered the aborted landing, and the retraction of the undercarriage.
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Destruction of Emirates flight EK521 might also add a further twist to the complexity of training pilots to handle such events effectively. If the cockpit alarm, warning of a long landing, proves to have been the trigger event for the go-around, investigators will have to explore the decision process that led the crew to abort touchdown when some 3km of runway remained.

Source:
FlightGlobal.com