The alert, initially issued by Southwest Airlines and reissued Wednesday by the airline's pilotassociation, warned there was a "potentially significant hazard" concerning the instrument landing system's glide slope guidance signal for runway 23.
That letter reminds that the MOU was reached in talks involving negotiators for five parties: the airlines, their two pilot unions, the Allied PilotAssociation and the U.S. Airline Pilots Association, and the creditors committee, represented by attorney Jack Butler.
America West pilots, a minority of the overall pilot group, backed the binding arbitration but were dragged along into the newly formed U.S. Airline Pilots Association.