SYNOPSIS
An airmiss occurred at Dublin Airport when a helicopter crossed the active runway in front of an aircraft that was taking off. On becoming airborne the Pilot of the Learjet aircraft was forced to take immediate evasive action to avoid a collision. There was little vertical or horizontal separation between the two aircraft at the time of the occurrence. There was no damage to either aircraft.
The Pilot of the helicopter had been given a conditional clearance to cross the runway after the Learjet had taken off. He crossed instead ahead of it and did not see the small Learjet, whose colour was dark grey, until the airmiss. ATC procedures at EIDW have since been changed with conditional clearances to cross active runways no longer being issued to helicopters.
