the MGB in question, did not fail within 10 mins. it has been proved that the rotors were still turning on impact with the water, and the gearbox was removed from the aircraft wreckage and examined. yes the tail rotor drive pinion was damaged but thats hardly surprising given the loads going through it. but the main rotor was still turning. the evidence in the report shows that they appeared to be in an attitude cosistent with a flare, their words not mine. suggesting they still had some control.
also, the filter bowl and attachment is no longer the same desing. the line changable parts are now secured to the box with a ring of 6 bolts. allowing for one or more to break without the ability to unseat the filter bowl.
time you did a bit of research of your own instead of repeating the words of the uneducated as your own.