Chapter 1
Fatigue
Gentler than its type
How short were its legs?
Utilization isn’t graded for N239SR: too few of its flights were tracked to count its use fairly, in the full report too. So its free chapter here is Fatigue, which doesn’t depend on catching every flight.
More hours for each landing, so fewer pressurization cycles for its time in the air.
Hours per landingLead measure. 96th percentile
Middle 1.4N239SR0.52.5+2.1 : 1middle Learjet 45 1.4 : 1
Short hops3rd percentile
Middle 37%N239SR0%90%+13%middle Learjet 45 37%
Leg length99th percentile
Middle 431 nmN239SR100 nm1,000 nm+1,021 nmmiddle Learjet 45 431 nm
How its legs split
Share of N239SR’s legs by length, nm, in the twelve months