Quote:
So half of the Qantas fleet require an engine change upon inspection.
None of the 11 Singapore aircraft - we have yet to hear of any of the 3 Lufthansa.
Would any resident mathematician/statistician like to work out the odds that this could be a simply random coincidence?
Maybe you need to check the engine types... there might be a (significant?) difference
The AD refers to all Marks, All serial numbers.
It may be that there is a particular Mark used by Qantas - that would be very significant if so.
A 2.7% chance of it being coincidental - is the converse that it is over 97% likely that it is not?
So quite likely it is either related to a particular engine Mark or alternatively related to a (Qantas) procedure.
(it could be the inspection procedure!)