Cause and Course of the Accident
    The cause and course of the accident
 
Status of solid rocket boosterFactor01
A jet of ultra-hot combustible gas eroded the insulation inside the nozzle on the right-side solid rocket booster.
Status of solid rocket boosterFactor02
A small hole formed on the nozzle, which caused a leak of combustible gas.
Status of solid rocket boosterFactor03
The leaking combustible gas heated the detonating fuse that was supposed to detach the solid rocket booster from the vehicle's body, causing the fuse to malfunction.
Status of solid rocket boosterFactor04
A signal to jettison the solid rocket booster was sent, but because the detonating fuse malfuctioned, the booster failed to detach.
Location of On-board Camera

Images from On-board Camera
Images from On-board Camera
result
The rocket was destroyed, as it did not gain the required velocity and elevation to reach orbit.
 
H-IIA Launch Vehicles imageH-IIA Launch Vehicles
The H-IIA series of Launch Vehicles used much of the technology of the H-II series, maintaining reliability while reducing cost by half. The H-IIA are Japan's world-class rockets, with the capability to carry various satellite weights into a range of orbits. They are expected to meet the transportation demands of the 21st century.
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