What happened
On June 27, 2011, an Embraer ERJ-170 operated by PLL LOT SA was engaged in a flight departing from the Warsaw Terminal Control Area (TMA EPWA). Shortly after takeoff at 00:05 UTC, the flight crew identified a malfunction involving the aircraft's flaps. Due to this technical issue, the crew decided to abort the flight and execute a return to the departure aerodrome.
The aircraft successfully completed the return procedure and landed without further incident at 00:36 UTC.
The investigation
The investigation into this incident was conducted by the operator. The inquiry focused on the sequence of events following the takeoff and the nature of the flap malfunction that prompted the crew's decision to return to the airport.