Incident Overview
Date: Thursday 28 February 1991
Aircraft Type: Learjet U-36A
Owner/operator: Japan Maritime Self Defence Force – JMSDF
Registration Number: 9203
Location: off Shikoku Island –
ÿ Japan
Phase of Flight: Manoeuvring (airshow, firefighting, ag.ops.)
Status: Destroyed, written off
Casualties: Fatalities: 5 / Occupants: 5
Component Affected: Maritime navigation systems and radar equipment of vessels.Maritime navigation systems and radar equipment of vessels.
Category: Accident

A low-level ECM (Electronic Countermeasures) exercise was detected off Shikoku Island, resulting in a significant impact on maritime operations. The exercise caused navigational disruption and potential risk to vessels.A low-level ECM (Electronic Countermeasures) exercise was detected off Shikoku Island, resulting in a significant impact on maritime operations. The exercise caused navigational disruption and potential risk to vessels.
Description
Impacted the waters off Shikoku Island during a low level ECM exercise.
Primary Cause
Low-level ECM exercise.Low-level ECM exercise.Share on: