(FYI, I was glancing through the book Famous Airplanes of the World No.117, Mitsubishi F-1, published by Burindo, 2006.09.05.
One of its articles was by Satou Mamoru, former commander of 3rd Koukuudan, JASDF.)
2 September 1986:
T-2B. 19-5171.
Hikou Kyoudoutai, JASDF, based at Nyuutabaru AB, Miyazaki Prefecture.
During training sortie, crashed in Kanoda, Saito City, central Miyazaki Prefecture.
Two pilots ejected, but one pilot killed because parachute did not open.
One civilian house, four cars, and one cafeteria burnt or destroyed.
Proprietor and one youth in car heavily wounded (burnt).
According to Satou Mamoru, former commander of 3rd Koukuudan, JASDF:
After take off, one engine flamed out or shut down.
Carried two drop tanks. Flew above sea to burn up fuel, but ineffective because had only one functional engine.
Decided to return to base, and to not dump drop tanks.
While circling above base for emergency landing, at big bank angle, stalled and crashed.
Some days later, Satou ordered commander of 8th Hikoutai to fly test flight to duplicate accident conditions.
After take off, throttled one engine to “idle”, and entered GCA pattern.
In pattern for landing, banked to 30 degrees, and began to descend.
GCA controller advised, because of traffic, keep circling at same height.
While circling at bank angle 30 degrees and same height, aircraft with one functional engine and full drop tanks or other heavy load, could not keep horizontal flight and began to descend, even with afterburner.
After this report, Satou issued the command: in future, when F-1 or T-2 could not dump its load, and attempted to land with one engine, bank angle must not above 15 degrees.
Evidence that F-1/T-2 engine thrust underpowered.
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