Air Asia plane requested new path

SURABAYA, Indonesia — The plane sought permission to climb above threatening clouds. Air traffic control couldn’t say yes immediately — there was no room. Six other commercial airliners were crowding the surrounding airspace, forcing AirAsia Flight 8501 to remain at a lower altitude. Minutes later, the jet carrying 162 people was gone from the radar. No distress signal was issued. It is believed to have crashed into Indonesia’s Java Sea on Sunday morning, but exactly what happened — and whether the plane’s flight path played any role — won’t be determined until after the aircraft is found.