Barit1, thanks for your post.
Generally speaking, turbine engines are scheduled for maintenance based on flight cycles rather than hours
Are there certain cases or engines where engine maintenance is based on flight hours?
So you can see that whether the cruise segment is 14 minutes or 14 hours, it makes little difference in engine life
Let’s take your statement (quote) as an example:
Assume we have similar engines installed in a short-haul and long-haul jet and the TBO (time between overhaul) is 3000 cycles. We assume also that both jets have equal flying time in other segments.
The short-haul jet engine will totalize 700 hrs (14 minutes X 3000) cruise time and the long-haul jet engine will totalize 42000 hrs (14 hours X 3000) cruise time.
Can you please explain me how could this wide difference on cruise time with engine operating in relatively high power will make only little difference in engine life?
Your feedback is appreciated.
Regards