On February 28, 1991, a Learjet 36 (registration 9203) operated by Japan Air Self-Defense Force - Kōkū Jieitai was involved in an aviation accident near Shikoku Island, Japan in flight. 5 people were killed. Investigators recorded the probable cause as: The aircraft struck the water surface while performing low-altitude maneuvers during an electronic countermeasures exercise. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 related events involving the same aircraft type or operator are linked below.
A low-level electronic countermeasures exercise ended in a fatal crash into the sea near Shikoku Island, resulting in no survivors.
What happened
During a low-altitude electronic countermeasures (ECM) training mission, an aircraft crashed into the ocean near Shikoku Island. The aircraft was performing maneuvers at a low altitude and low airspeed when it made impact with the water surface. The accident resulted in the deaths of all five crew members onboard.
Findings
Preliminary details indicate that the aircraft was operating in a low-level flight phase at the time of the accident. The impact occurred while the aircraft was cruising at low speed and low altitude during the execution of its military training exercise.
Probable cause
The aircraft struck the water surface while performing low-altitude maneuvers during an electronic countermeasures exercise.
What happened in the 28 Feb 1991 Learjet 36 accident near Shikoku Island, Japan?
A low-level electronic countermeasures exercise ended in a fatal crash into the sea near Shikoku Island, resulting in no survivors.
Were there any fatalities in the 28 Feb 1991 Learjet 36 accident?
The accident was fatal, resulting in 5 fatalities.
What aircraft was involved and where did it happen?
The accident on 28 Feb 1991 involved a Learjet 36, registration 9203, operated by Japan Air Self-Defense Force - Kōkū Jieitai, at Shikoku Island, Japan.
What was the probable cause of the accident?
The aircraft struck the water surface while performing low-altitude maneuvers during an electronic countermeasures exercise.
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