Aircraft owners at a Pittsburgh-area airport say they're being forced out of their hangars by a tripling of rents. The rent for hangar space for small planes at Allegheny County Airport is going from about $550 a month to almost $1,600 a month in a move that pilots claim is an attempt to force them off the field. "I think, in summary, they're trying to push us out," Mooney owner Harry Neel told the Pittsburgh Tribune-Review. "It's a massive increase." But county officials say FAA policy is behind the rent hikes, which take effect Oct. 8. Allegheny Airport Authority spokeswoman JoAnn Jenny said the FAA requires airports to charge fair market value for services they deliver and the airport hasn't been keeping up with the times. She said it may be as long as 50 years that the current rental rates have been in place. "It is not our goal to evict people," she said. A total of 53 aircraft are affected. Another 90 are kept outside.