On 18 December 2010, the ATC Runway Controller responsible for runway 24 at Amsterdam gave a night take off clearance in normal visibility to a Norwegian Boeing 737-300 whilst a bird control vehicle which they had earlier given clearance to enter the runway was still on it. The departing aircraft overflew the vehicle without noticing it. The subsequent investigation highlighted significant differences between the procedures for active runway access at Amsterdam and corresponding international practice as well as finding that integrated safety investigation and overall safety management at the airport were systemically ineffective.