Chapter 1
Fatigue
Gentler than its type
How short were its legs?
Utilization isn’t graded for N990WA: 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. 83rd percentile
Middle 1.4N990WA0.52.5+1.7 : 1middle Learjet 45 1.4 : 1
Short hops3rd percentile
Middle 37%N990WA0%90%+13%middle Learjet 45 37%
Leg length70th percentile
Middle 431 nmN990WA100 nm1,000 nm+525 nmmiddle Learjet 45 431 nm