Last month the International Brotherhood of Teamsters (IBT) filed with the National Mediation Board (NMB) for an election to allow the pilots at fractional aircraft operator Raytheon Travel Air to vote for union representation. If it is verified that 35 percent or more of RTA pilots have requested an election, it will be so ordered. The only fractional pilots now unionized are those flying for NetJets, who belong to IBT Local 284.