Chapter 1
Fatigue
Harsher than its type
How short were its legs?
Utilization isn’t graded for N747LG: 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.
Short legs put more pressurization cycles on the structure for the same time in the air. Worth checking its cycle-based inspection limits before a pre-buy.
Hours per landingLead measure. 19th percentile
Middle 1.2N747LG0.52.5+1.0 : 1middle 550 1.2 : 1
Short hops77th percentile
Middle 55%N747LG0%90%+67%middle 550 55%
Leg length27th percentile
Middle 274 nmN747LG100 nm600 nm+196 nmmiddle 550 274 nm