Efforts by a group of Virgin America pilots to unionise the airline's pilots have failed after it did not secure the support of a sufficient number of cockpit crew members for a union election.
The petition by the group, Virgin America Pilots Association (VAPA), was filed with the National Mediation Board (NMB).
"The NMB has concluded that VAPA did not submit a sufficient number of valid authorisation cards to meet their requirement," says the airline.
VAPA would have required cards from at least half of Virgin America's pilots to obtain an election for union representation.
In a letter to employees, Virgin America chief executive David Cush said that the airline's "team approach" has set it apart from other US airlines. "I am pleased that during this process all of our teammates maintained the professionalism, commitment to our guests and respect for each other that defines who we are as a company," he added.