UPDATE 2-Airlines want joint lifting of 737 MAX ban, but EU cautious

Airlines urged regulators on Sunday to coordinate on software changes to the Boeing 737 MAX in a bid to avoid damaging splits over safety seen when the aircraft was grounded in March. The International Air Transport Association (IATA), whose 290 carriers account for 80 percent of world flying, said trust in the certification system had been damaged by a wave of separate decisions to ground the jet, with the U.S. last to act. Boeing's best-selling jet was grounded after two crashes, in Indonesia and Ethiopia, over five months killed a total of 346 people.