Toa Domestic Airlines Flight 63

Toa Domestic Airlines Flight 63, registration JA8764, was a NAMC YS-11A-217 en route from Okadama Airport in Sapporo, Japan to Hakodate Airport. On July 3, 1971, the plane left Sapporo Okadama Airport on a scheduled flight at 08:30. After arriving in Hakodate airspace, the plane was descending below 1800 metres when it crashed at 09:05 into the south face of Yokotsudake (Yokotsu Mountain). All 64 passengers and four crew on board are killed in the scene. The cause of the crash was determined to be pilot error that followed strong winds pushing the plane off course which leads to CFIT.

Toa Domestic Airlines Flight 63

The aircraft involved in the accident in April 1971
Accident
Date	July 3, 1971
Summary	Pilot error leading to CFIT
Site	Yokotsudake, Hokkaido, Japan 41.93333°N 140.7833°E / 41.93333; 140.7833 (Yokotsudake)
Aircraft
Aircraft type	NAMC YS-11A-217
Aircraft name	Bandai-go
Operator	Toa Domestic Airlines
Registration	JA8764
Flight origin	Okadama Airport
Destination	Hakodate Airport
Passengers	64
Crew	4
Fatalities	68
Survivors	0

The Aircraft Accident Investigation Commission (AAIC) was formed soon after the crash.^[1]