6月1日，由美国飞往日本的全日空波音787-8客机因空调故障，导致飞机不到10分钟从1万3千米高空紧急下降1万米，飞机上乘客无人受伤。6月5日，日本国土交通省将此认定为“重大事故”并指派专员进行调查。
INCIDENT: ANA All Nippon #NH171 San Jose to Tokyo Narita (Boeing 787-9 JA837A, departedSaturday 1st) declared an emergency NE of Tokyo due to a loss ofpressurisation & aircon systems. The aircraft descended to10,000ft and landed at 1445UTC. https://t.co/thiNIaI4KTpic.twitter.com/U9al44s2hs
― Airport Webcams (@AirportWebcams) June 5, 2019</blockquote> ?
