### Dear Ms. MacPherson:

US Airways and US Airways affiliated carriers request a slot utilization waiver for a portion of the January/February 2011 reporting period. This request is due to the extreme weather conditions throughout the reporting period. As an air carrier with a significant portion of its operation in the geographic area affected by the weather throughout the period, we note that these weather occurrences are out of our control. US Airways and our affiliates always intend to fly every schedule d flight at slot controlled airports, as well as airports throughout the rest of our system. The weather in Januar y and February had an impact over almost all of our s ys tem due to operational issues it created at our hubs in PHL and CLT with other destina tions to/from DCA, LGA, JFK and EW R. These circumstances were completely out of US Airways control. Many day s the weather required significant delays or flight cancellations at the four slot controlled airports. At various times throughout the period outl yi ng airports were closed or had significant delays causing cancellations at DCA, LGA, JFK, and EW R. The am ount of snowfall was at record or near record amounts in many localities for individual days and monthly totals during the period.
Under the various slot controlled airport rules in DCA, LGA, JFK and E WR , slots available to operate must be operated a minimum of 80% of the days available during a two month reporting period. During the January/ Februar y 2011 reporting period’s extreme weather US Airway s and US Airways affiliates were able to operate each slot at the 80% or better requirement with one exception. The LGA slots listed below should be at the US Airways affiliated carrier designated for the 2011 dates which are noted. The reason for this req uest is due to a clerical error. The carriers are AIR Wi sconsin (A

WI ) and Piedmont (PDT). The two carriers operate with the USA designator as a result of their USA affiliation. USA administers all slots operated by its affiliates. The error resulted from f ailure to send appropriate transfer messages. USA takes any error seriously. W e will be working with our slot management sy stem provider to attempt to prevent any errors of this sort in the future. Slot Carrier Operating Dates 3011 AW I JAN 3 2009 PDT JAN 11/12/18/19/20/21/24/25/28 3246 PDT JAN 31; FEB 3/4/7/8/9 3726 PDT FEB 10/11/14/15/16 For all the reasons stated above, US Airways and US Airways affiliates request a waiver for LGA operations at the 1700

- 1729 departure one

- half hour. The various situations noted previously culminated at the 1700 departure half hour. The LGA flight completion percentages for US Airways on the six days mentioned below ranged between 33% and 70%. The normal daily system wide completion rate for US Airways is between 98.5% and 99.0%. These unusual operational conditions required several day s from which to completely recover and have the abilit y to operate a routinely planned schedule. The slot waiver is specifically requested for those slots and dates lis ted: 2009/1700D for January 11, 12, 26 and Februar y 1, 2 3246/1700D for January 11, 12, 26, 27 and Februar y 13726/1700D for January 26 and Februar y 1, 2

2169/1700D for January 11, 12, 26, 27 and Februar y 1, 2 4337/1700D for January 26 and Februar y 1, 2 Thank you for considering this waiver request. Please contact me if I may be of any additional help. Quentin Bondurant Manager Future Schedules US Airways