Line
Modifications
These segments are different with each other according to dependency to some factors such as
labor, parts repair, materials etc. For example, engine overhaul that has the most share of MRO
market, extremely depends on materials and on the other hand labor has the least effect on this
segment, but line maintenance is completely vice versa, i.e. materials has the least effect on this
segment and labor has the most. Table 1 contains the percentage of dependency of each segment
to the factors that was mentioned before.