Due to light rain and fog that morning, the Los Angeles Police Department helicopters and most other air traffic were grounded. The flight tracker showed that the helicopter circled above the L.A. Zoo due to heavy air traffic in the area. At 9:30 a.m., the pilot contacted the Burbank Airport's control tower, notifying the tower of the situation, and was told he was "flying too low" to be tracked by radar. At that time, the helicopter experienced extreme fog and turned south towards the mountains. At 9:40 a.m., the helicopter climbed rapidly from , flying at .