An AirAsia flight heading from Indonesia to Singapore has lost contact with air traffic control.
The news has sparked a search and rescue operation for flight QZ8501, which is believed to have 162 people on board - including a British national, the UK Foreign Office has confirmed.
It was due to land in Singapore at 8.30am local time (12.20am GMT) after apparently requesting a "deviation" from the flight path due to bad weather.
A statement from the Malaysian-based airline on Facebook said:
"AirAsia Indonesia regrets to confirm that flight QZ8501 from Surabaya to Singapore has lost contact with air traffic control at 07:24 (Surabaya LT) this morning. The flight took off from Juanda International Airport in Surabaya at 0535hours.
The aircraft was an Airbus A320-200 with the registration number PK-AXC. There were two pilots, four flight attendants and one engineer on board.
The captain in command had a total of 6,100 flying hours and the first officer a total of 2,275 flying hours
There were 155 passengers on board, with 138 adults, 16 children and 1 infant. Also on board were 2 pilots and 5 cabin crew.
At this time, search and rescue operations are being conducted under the guidance of The Indonesia of Civil Aviation Authority (CAA). AirAsia Indonesia is cooperating fully and assisting the investigation in every possible way.
The aircraft was on the submitted flight plan route and was requesting deviation due to enroute weather before communication with the aircraft was lost while it was still under the control of the Indonesian Air Traffic Control (ATC).
The aircraft had undergone its last scheduled maintenance on 16 November 2014.
AirAsia has established an Emergency Call Centre that is available for family or friends of those who may have been on board the aircraft. The number is: +622129850801.
AirAsia will release further information as soon as it becomes available. Updated information will also be posted on the AirAsia website,www.airasia.com."
