http://www.taproot.com/wordpress/2008/03/13/more-news-on-southwest-maintenance-issues-some-flight-temporary-grounded-due-to-maintenance-records/ Root Cause Analysis / Accident Investigation / Performance Improvement / TapRooT® Fri, 16 May 2008 14:18:32 +0000 http://wordpress.org/?v=2.2.1