At the end of the movie Bruce climbs out on the wing opens a panel and manually dumps the fuel, then the plane takes off he lights the fuel it catches up to the plane as it takes off and explodes.
1. On airplanes with the ability to dump fuel there is no External Manual Dump valve, fuel only needs to be dumped in flight how does the flight crew get out on the wing and dump fuel at 300 knots.
2. When aircraft do dump fuel by FAA law they must dump almost all the fuel (except what's required to land) in 10 minutes (it doesn't trickle out).
3. Said fuel spill on a runway in winter would be real hard to ignite (low flashpoint of kerosene) much less catch up with an airplane taking off at 150 knots who's engine exhaust has a velocity of 350 knots and would extinguish the flame.
4. The plane could not explode because the fire would have to travel up the kerosene past the engine (it's running) into the mythical dump valve and navigate through pipes with no oxygen then get into the fuel tank.