I'm sure this is going to sound confusing as hell...
I am curious to see if there are any significant economic pitfalls for an airline to operate a mixed 777-200ER/LR fleet with roughly the same number of each model.
In thinking to the range of markets which can be served by both aircraft from the United States to Asia, some flights (such as the N. Pacific destinations of Japan, Korea, China) are perfect for the passenger/freight load an -ER has, while the -LR would be overkill. On other flights to the S. Pacific (Australia, Singapore, Thailand), the -LR is the best performer where the -ER would see many operational limits placed on westbound flights.
Operating with this mix between the two aircraft seems as if it wouldn't allow for maximum effeciency in aircraft scheduling, as a NRT-LAX -ER flight cannot turn and operate a full LAX-MEL trip. In short, Would the unnecessary weight which the -LR aircraft would bring to the shorter N. Pacific routes be outweighed by the operational flexibility of operating an entirely -LR fleet on an airline's Pacific route network?
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