Woomera,
You seem to be having two bob each way.
(QUOTE)
Tins is on the money! In a theoretical world, if the demonstrated failure rate were < 1:100,000, when the fleet total exceeds 100,000 hours, it is really irrelevent whether the engine which will fail is on a single engine or multi engine aircraft. For that reason, there should be no greater risk of engine failure on a S/E or M/E aircraft.
However, I accept if one has a four engine aircraft, the risk may be higher that the engine which is going to fail will be on that four engine aircraft and not on the S/E aircraft.
Now I'm completely muddled!
(ENDQUOTE)
IF you have a certain engine type, just pretend say CFM56, and in the Airline we are both with, it has a failure rate of 1 in 100,000 hours.
You are flying an aircraft with 2 of these CFM56s, and I am flying an (imaginary) aircraft in our fleet with 10 of these CFM56s.
Obviously nobody can be sure which CFM56 will fail next, however surely you believe that the ODDS are ONE of my 10 will fail before ONE of your 2.
Of course I will still have 9 left...........
