It is believed that Ara Zobayan, the pilot of the helicopter that crashed and killed Kobe Bryant, Gianna Bryant and seven others, was likely disoriented due to the fog and clouds present at the time.
The National Transportation Safety Board (NTSB) determined Zobayan may have “misperceived both pitch and roll angles.” Zobayan radioed to air traffic control that he was “climbing to four thousand [feet]” when in fact the helicopter was descending toward a hillside where it would ultimately crash. The NTSB also said there was no signs of engine failure before the crash.
The more than 1,700 pages of reports do not give a final conclusion as to the cause of the crash, but rather compiled multiple factual reports.