When the co-pilot, who was the Pilot Flying (PF), asked for the landing gear to be retracted, the Pilot Monitoring (PM) retracted the landing gear and flaps. Realising his error, the PM told the PF to select TOGA thrust. The PM moved the flap lever back to position 1, when instructed by the PF to reselect the flaps, and the slats began to extend. The flight continued without further incident.
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Published 14 September 2017