Nov. 18 (Bloomberg) -- Delta Air Lines Inc. said the National Mediation Board rejected claims of election interference by the Association of Flight Attendants, so the union’s defeat last year will stand.

The ruling by the three-member panel allows Atlanta-based Delta to proceed with integrating 20,000 attendants under common work rules and pay scales following the company’s 2008 purchase of Northwest Airlines, according to an e-mailed statement today.

--Editors: Ed Dufner, John Lear

To contact the reporter on this story: Mary Jane Credeur in Atlanta at mcredeur@bloomberg.net

To contact the editor responsible for this story: Ed Dufner at edufner@bloomberg.net