– New documents obtained by CBS News show the situation on Southwest Airlines
is worse than previously known. At various times during the past week, more than 60 Southwest 737s were taken out of operation by unscheduled maintenance mechanics. The airline says that "unscheduled aircraft downtime", or UADs, has spiked on several maintenance hubs in particular.
Southwest said that since February 12, the average UAD in Orlando has risen to 60 hours a day compared to an average of 10.2 hours per day over the past two years. In Houston, UAD had an average of 1
8.6 hours a day, but jumped to 111 hours on February 12, then rose again to 127 the following day.
Read more: Several southern aircraft outside the Commission as aviation type with mechanics