Sticking to a few fleet types also helps airlines lower operating costs in terms of maintenance, repairs and personnel training.

Results missed our estimate of $5.07, reflecting higher operating costs than we expected and lower throughputs than expected.

Based on the budget we were looking at, this levy will be used for the operating budget, salaries, repairs and maintenance, no capital improvements.

Airlines will come out with a fare, but then be forced to lower it as the day of the flight arrives. It's like they're playing a game of chicken with the passengers, and whoever blinks first wins. Usually, it?s the carrier who blinks.

Basic maintenance and repairs have been made in subsequent decades. But upgrades necessary to keep it in top condition were deferred, in part from a rate freeze that was in effect for years.

We are still sticking to our objective of hitting the lower end of the milestone.