What happened
On September 4, 2010, a Boeing 737-7H4, operating as SWA1390, was cleared for takeoff from runway 24L at Los Angeles International Airport (LAX). Shortly after departure, the pilot of N907WN contacted the local control frequency to inquire about a helicopter observed on the right side of the aircraft during the takeoff roll.
Simultaneously, a helicopter, operating as Mercy Air 19, was flying under visual flight rules (VFR) through the Class B airspace surrounding LAX. The helicopter pilot had requested clearance via the Shoreline route and was instructed by the helicopter control (HC) controller to descend to 150 feet by the time the aircraft crossed the departure corridor. However, instead of turning toward the beach to follow the Shoreline route, the helicopter turned toward the departure end of runways 2ally 24L and 24R.
Radar data indicated that the closest point of approach between the two aircraft occurred at approximately 12:50:39, when the aircraft were separated by approximately 750 feet laterally and between 100 and 200 feet vertically. There were no injuries and no damage to either aircraft.