An AirAsia jet with 162 people on board disappeared Sunday while flying from Indonesia's second-largest city to Singapore on a scheduled two-hour flight. Here is a look at the key developments. 
 
 Passengers queue for their flights at the AirAsia check-in counter in Changi International Airport on Sunday, Dec. 28, 2014 in Singapore. In the third air incident connected to Malaysia this year, an... (Associated Press) 
 
 Passengers queue at the AirAsia service counter at the Changi International Airport on Sunday, Dec. 28, 2014 in Singapore. In the third air incident connected to Malaysia this year, an AirAsia plane with... (Associated Press) 
 
 __ Air Asia Flight 8501 takes off from Surabaya, Indonesia's second-largest city, at 5:31 a.m. Sunday (2231 GMT Saturday), bound for Singapore. 
 
 __ The last communication between the pilot and air traffic control is made at 6:13 a.m. (2313 GMT Saturday), when the pilot asks to turn left and climb to 34,000 feet (10,360 meters) to "avoid clouds," according to Djoko Murjatmodjo, Indonesia's acting director general of transportation, who also said there was no distress signal from the cockpit. 
 
 __ AirAsia says the Airbus A320-200 was on the submitted flight plan route. Murjatmodjo says it is believed to have gone missing somewhere over the Java Sea between Tanjung Pandan on Belitung island and Pontianak, on Indonesia's part of Borneo island. 
 
 __ A search and rescue operation is launched involving Indonesia, Singapore and Malaysia. Three Indonesian aircraft are dispatched to the area, while Singapore's air force and navy search with two C-130 planes. 
 
 __ Dozens of relatives of people aboard the plane gather in a room at Surabaya airport to await word about their loved ones. 
 
 __ Malaysian businessman Tony Fernandes, AirAsia's CEO, tweets: "Thank you for all your thoughts and prays. We must stay strong." He later tweets to say he is heading to Surabaya. ||||| This wraps up our coverage of the disappearance of AirAsia flight QZ8501. The plane lost contact with air traffic controllers between Indonesia and Singapore with 162 people on board. 
 
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– An AirAsia plane with 162 people on board lost contact with ground control today while flying over the Java Sea after taking off from Indonesia for Singapore, initiating a massive search for the third possible aviation disaster to affect the region this year. AirAsia, a regional low-cost carrier based in Malaysia, said the missing Airbus A320 was on its submitted flight plan route. However, it had requested permission to deviate because of weather. "We don't dare to presume what has happened except that it has lost contact," said Indonesia's acting director general of transportation. He said the last contact between the pilot and air traffic control was at 6:13am local time when the pilot asked to go up to 34,000 feet, apparently to avoid stormy weather. It was last seen on radar at 6:16am, and a minute later was no longer there, he said. Darkness has fallen in the region, reports the BBC, and the search has been called off for the night. It will resume in the morning. He said there was no distress signal from Flight QZ8501. The contact was lost about 42 minutes after the single-aisle jetliner took off from Indonesia's Surabaya airport. It still had about an hour to go before arriving in Singapore. The plane had seven crew and 155 passengers, including 16 children and one infant, said the general manager of Surabaya's Juanda airport. There were six foreigners—three South Koreans, including the infant, and one each from Singapore, Britain, and Malaysia. The rest were Indonesians. The 6-year-old plane is believed to have gone missing somewhere over the Java Sea between Tanjung Pandan on Belitung island and Pontianak, on Indonesia's part of Kalimantan island. The AP has a list of key developments in the plane's disappearance here.