Probably a cable snapped when this Sukhoi Su-33 was landing, causing this crash. Luckily, the pilot ejected, as the plane went for a dive.

As the title says here's a video clip of a Russian Suhoi 33 which does a "Cobra" maneuver immediately after taking off from the Russian Carrier. The maneuver is said to take its name from an incident on the 17th of July, 1998 when the carrier landing mistake of Pavel Podguzov was turned into a new aerobatic element - "gurza Podguzova" of "Podguzov viper". Of course, that only pilot's professionalism and highest Su-33 flight performance can execute this fantastic maneuver which can easily become a disaster. There is a moment there after the take-off from the Russian carrier when the plane looks like it is floating in mid-air. Wow! Enjoy this very spectacular video clip!