FedEx launches campaign against UPS over FAA bill

* FedEx says FAA reauthorization bill is "bailout" for UPS

* Says bill puts FedEx at a disadvantage

CHICAGO, June 8 (Reuters) - Package delivery company FedEx Corp (FDX.N) will launch a campaign on Tuesday attacking main rival United Parcel Service Inc (UPS.N) over a bill in Congress that FedEx said amounts to a bailout for UPS.

The Internet campaign at www.brownbailout.com -- which goes live on Tuesday -- attacks Atlanta-based UPS over a reauthorization bill for the Federal Aviation Administration that was passed by the U.S. House of Representatives in May and awaits Senate approval.

FedEx has previously taken issue with a provision in that bill -- that would have FedEx employees covered by the National Labor Relations Act instead of the Railway Labor Act -- which would make it easier for the Memphis-based company's employees to unionize locally instead of holding a nationwide vote.

FedEx said this would take away its competitive advantage over UPS, the world's largest package delivery company.

UPS employees are covered by the NLRA.

The RLA covers airlines and railroads and covers FedEx which started out as an express delivery airline in 1973 before adding trucks.

Representatives of UPS were not immediately available for comment.