The Airline Quality Rating (AQR) was developed and first announced in early 1991 as an objective method for assessing airline quality on combined multiple performance criteria. This current report, the Airline Quality Rating 2009, reflects monthly Airline Quality Rating scores for calendar year 2008. AQR scores for 2008 are based on 15 elements in four major areas that focus on airline performance aspects important to air travel consumers. The Airline Quality Rating 2009 is a summary of month-by-month quality ratings for U.S. airlines that are required to report performance by virtue of having at least 1% of domestic scheduled-service passenger revenue during 2008. Using the Airline Quality Rating system of weighted averages and monthly per...