confused as to why this says Airbus aircraft, and the pointy ends of B747????? The 'pointy end' is the front, what do they call the tail of the ac? So much for the sophistication of a QANTAS pax according to the company...
On the QANTAS 747, any sound is similar to the old adage, "if a tree falls in the forest, and no one is around to hear it, does it make a noise"
( I only recall a boing at 10K ....)