A merger between United Airlines and US Airways would be "extremely negative," United's pilots' union chief said on Tuesday.
"While United has its own problems and issues... US Airways' problems run even deeper," said Steve Wallach, chairman of the Air Line Pilots Association (ALPA) chapter at United.
Wallach said in a statement reports of advanced merger discussions between United and US Airways on Monday have generated "enormous concern" among pilots at United.
They point to potential problems of combining work arrangements and seniority of union employees at both companies, if a merger were proposed. US Airways has failed to integrate pilots following its 2005 merger with America West Airlines.