BillS (20:50):
A very rough calculation (discounting the possibility of 2 to 4 problem engines on 1 airframe and assuming all of LH's are OK) gave me 0.0246348
(or 2.46348% for the bean counters and around 40:1 for the punters).
When you include the possibility of 1 to 3 problem engines on one airframe, the probability, surprisingly, goes down to 0.0155793 (worse than 60:1) .
Excluding the 3 LH aiframes altogether gives us 0.0255406 (about 38:1)
Last edited by Gegenbeispiel; 6th Nov 2010 at 21:48.