On 16 November 2017, a Boeing 737-700 departing Singapore Seletar was observed by ATC to only become airborne very near the end of the runway and to then climb only very slowly. Ten approach lights were subsequently found to have been impact-damaged by contact with the aircraft. The Investigation found that after the crew had failed to follow procedures requiring them to validate the FMC recalculation of modified takeoff performance data against independent calculations made on their EFBs, takeoff was made with reduced thrust instead of the full thrust required. The modification made was also found not to have been required.