While the cause of the helicopter crash that killed Kobe Bryant, his daughter, and seven others has not yet been determined, the weather and terrain conditions in the Los Angeles area on Sunday were similar to those that have killed many helicopter pilots over the years, with fog and clouds masking rugged, rising terrain. The reconstruction of his flight that follows is based on information from transponder data, air traffic control audio recordings, and my own experience as a pilot who was trained in the exact area where the incident took place.
Bryant’s helicopter, a Sikorsky S-76B built in 1991, took off shortly after 9 a.m. from John Wayne Airport in Orange County, which is located near the coast approximately 35 miles south of downtown LA. According to the New York Post, Bryant and the eight other passengers were heading to a basketball game at his Mamba Sports Academy in Thousand Oaks, approximately 70 miles to the northwest. Over the course of the next 40 minutes the helicopter would trace a circuitous route around the Los Angeles basin as it negotiated mountains and busy airspace in three main phases: first, cutting across the broad coastal plain of central Los Angeles, then winding around the basin of the San Fernando Valley to its north, before a final ill-fated attempt to cross the rising terrain that led west to Thousand Oaks.
At takeoff a few minutes after 9 a.m., the weather was marginal, with a solid overcast at 1300 feet and visibility of about 5 miles in a thin haze. The pilot was flying according to “Visual Flight Rules,” or VFR, meaning that he was relying on his ability to see the terrain below him, and hence had to stay below the clouds. As an alternative, he could have contacted air traffic controllers and switched to “Instrument Flight Rules,” or IFR, that would have allowed him to climb up through the clouds. Controllers would have given him a series of waypoints to follow that would keep him well clear of terrain, dangerous weather, and other aircraft. Flying IFR, however, is time-consuming and constrains pilots to following the directions of controllers. “Southern California airspace is extremely busy, and they might tell you to wait an hour,” assistant professor of aviation at the City University of New York Paul Cline told me. “You’re just one of many waiting in line, and it doesn’t matter if you’re Kobe Bryant.”
So the helicopter continued under visual flight rules. Continue reading New York: Kobe Bryant’s Helicopter Likely Succumbed to Well-Known Danger