Shop visits whose decision deadline falls in this month (to be in time for the shop slot booking and the LLP kit order). Items already past their deadline are included in the first month.
Based on expected maintenance cost. Shows the share of external shops and the concentration on a single shop.
Engines that can be back on wing under the plan (at quoted TAT) vs installed engines needed to fly the schedule plus the shelf buffer. Line above the bars = spare capacity.
Shop visits (bars) and spend by year from a 20-year life-cycle simulation (constant parameters), run 10 years ahead from the current state. The red dashed line is spend with ageing (deterioration accelerating 2% a year). Shading marks the current 2-year plan. Peaks and troughs between years show where to consider levelling (bringing shop visits forward or deferring them).
Data are synthetic values estimated from public information.