GB
but it was Australia and it wasnt a criminal offence, this is why support people and the associated structures and systems are in place. This is not really different from a truck driver not following a "no engine braking" area at night...he probably wont get locked up..and certainly not fined over 100K.
It is not a safety rule...but exists simply to satisfy complaining people who moved into houses after the airport was built and probably had sound proofing installed courtesy of you and I travelling. Of course had it been a safety issue the tower would not have let them go....
Ask the 300 pax on the flight if they think the 100K is worth it...given the circumstances around this flight I find it quite poor that dispensation was not given. But such is life.