Some debris blocked the intake. Sounds like it was built in haste. As this 100m must've been enough to pay for the jet and every conceivable problem that might occur.
andres - nets on the side wouldn't have helped in this case. The aircraft had insufficient power to take off; the pilot ejected at the top of the ramp and the aircraft fell into the sea.
Not kept quiet at all, I think there was even a video doing the rounds of it falling off the ski jump. The word in the pub last night is that it's usually a fuel pump problem, and they're the guys who work on military aircraft.