Japan Air System Flight 451

Japan Air System Flight 451 was a Japan Air System flight from Nagoya Airport in the Nagoya area of Aichi Prefecture, Japan to New Chitose Airport in Sapporo, Hokkaido Prefecture, with a stopover at Hanamaki Airport in Hanamaki, Iwate Prefecture. On April 18, 1993, the Douglas DC-9-41 operating the flight crashed while landing at Hanamaki Airport.

The McDonnell Douglas DC-9-41 (aircraft code: JA8448, serial number: 47767/885) was operated as Japan Air System Flight 451 (hereinafter referred to as "JAS451"). It was manufactured in the United States in 1978 and registered in Japan in September of the same year. The DC-9-41 aircraft was one of 22 planes introduced by Toa Domestic Airlines (later Japan Air System) between 1974 and 1979 for domestic local routes.

On April 18, 1993, JA8448 departed from New Chitose Airport and flew to Hanamaki Airport, then Nagoya Airport, as part of Flight JAS 451. The flight plan indicated that it was supposed to fly back to New Chitose from Hanamaki.

The aircraft suddenly lost a significant amount of airspeed as it crossed the boundary line of a passing cold front, and encountered resultant windshear while on final approach. The somewhat inexperienced first officer was not able to conduct a missed approach fast enough to avoid a hard landing. The plane then skidded off the runway.

All 72 passengers and five crew members survived, with 19 people sustaining injuries. The aircraft caught fire as the passengers evacuated; it was destroyed and written off.