On 18 December 1983, the Airbus A300B4-120 operating the flight crashed 2 km (1.2 mi; 1.1 nmi) short of the runway while landing at Subang International Airport.

[3][4] Malaysian Airline System Flight 684 departed Singapore Changi Airport on 18 December 1983 at 18:53 local time.

As the flight approached Subang International Airport (now Sultan Abdul Aziz Shah Airport) in Subang, Selangor, Malaysia at 19:20 local time, it was cleared for an instrument landing despite poor runway visibility of 450 m (1,480 ft) due to rain.

Airline policy required visibility of at least 800 m (2,600 ft), but the pilot assumed control from the first officer and began his descent.

[5] The altimeter warning sounded and within 30 seconds the aircraft struck trees 2 km (1.2 mi; 1.1 nmi) short of the runway.