Newark is dead last in on-time arrivals=0AFOR 2006=0APosted by the Asbury P= ark Press on 02/9/07=0ATHE ASSOCIATED PRESS=0ANEWARK =97 For the third time= in four years, federal transportation officials have ranked Newark Liberty= International Airport as the worst among major airports for on-time arriva= ls, and the airport isn't doing well with on-time departures either.=0ANewa= rk, one of three major commercial flight hubs serving the New York area, sa= w only 62.56 percent of its flights arriving on time in 2006, according to = new numbers from the U.S. Transportation Department.=0ADeparting flights we= re on-time 71.87 percent of the time in Newark last year, a figure only wor= se for Chicago's O'Hare, at 68.84 percent, and Atlanta, at 71.61 percent.= =0AAviation experts cite a number of reasons for Newark's woes: bad weather= , the New York area's congested airspace, airlines squeezing too many fligh= ts in during peak travel hours and inefficient use of runways.=0A"There are= too many planes flying," Robert Belzer, a critic of the New York area's ai= rspace policies, told The Star-Ledger of Newark for Thursday newspapers.=0A= The Port Authority of New York and New Jersey, which runs Newark Liberty al= ong with New York's LaGuardia and JFK, has blamed the Federal Aviation Admi= nistration, questioning whether the nine commercial runways at the three ai= rports are being put to the best use.