Fleet compositions
I have been reading various threads about the decisions made when acquiring aircraft and the various factors that go into these decisions. There is a great thread for example about what Qantas will be getting to replace their earlier 747s.
One of the factors seemed to be commonality of training and maintenance etc. and so it occurred to me if it is a generally a good thing to minmise the number of different types performing the same function, why do you have airlines like Austrian that seem to have two or three of everything. E.g. 3x 772, 5x 767, 4x 330, 2x 342 and 2x 343. It seems rather inefficient having small numbers of a comparatively large range of types.
Would love to hear people's thoughts on why this is the case. Thanks!