Indonesia's Sriwijaya Air loses contact with plane after take-off
"A Sriwijaya (Air) plane from to Pontianak (on Borneo island) with call sign SJY182 has lost contact," said ministry spokesman Adita Irawati.
"It last made contact at 2:40 pm (0740 GMT)."
There were 56 passengers and six crew members onboard the Boeing 737-500, which has a capacity of about 130, when it took off from Jakarta's Soekarno-Hatta international airport.
The usual flight time is about 90-minutes.
The budget airline said only it was investigating the incident.
Indonesia's search and rescue agency and the National Transportation Safety Commission were also investigating, Irawati said.
In October 2018, 189 people were killed when a Lion Air jet slammed into the Java Sea about 12 minutes after take-off from Jakarta on a routine one-hour flight.
That crash - and a subsequent flight in Ethiopia - saw Boeing hit with $2.5 billion in fines over claims it defrauded regulators overseeing the 737 MAX model, which was grounded worldwide following the two deadly crashes.
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