minimum engine reliability standards for certain PC2 operations (not more than
one in-flight engine shut-down per 100,000 flight hours in the most recent
5-year period)
Is it further qualified with number of units being monitored or example? Bit like saying Robinsons crash more than other light helicopters when there are
multi more of that type around than others.
The metric is engine failure rate and takes into account the sample size. Using the Robinson example, even if there were more Robinson crashes (because there are more Robinsons around), the Robinson crash rate might not be any higher than for other light helicopters.