失事飞机的两名飞行员并非新手，但属第一次合作（The pilot in charge of landing the plane on Saturday was in training on the 777 and was roughly halfway through the process, while seated next to him was a co-pilot on his first flight as an instructor. Both were experienced pilots, although they had not flown together before, Hersman said.）。事故可能与飞机下降时速度太慢有关（引自：美国航空安全委员会）