On 18 January 1988, an Ilyushin Il-18 flying the route crashed near Longfengxinmin Village, Chongqing, China, with the loss of all 108 passengers and crew.

Flight 4146 was a scheduled domestic passenger flight from Beijing Capital International Airport, Beijing to Chongqing Airport, Chongqing, with 98 passengers and a crew of ten on board.

However, the starter/generator fitted to the engine had overheated to such an extent that it had burnt the tube supplying oil at high pressure to feather the propeller.

When the crew feathered the propeller, the tube burst and the leaking oil caught fire.

[2] Not long after the crash of Flight 4146, the Civil Aviation Administration of China ordered safety checks that found mechanical problems leading to the grounding of at least 17 aircraft.