A 27-year-old Boeing 737-400 cargo plane with five crew members has gone missing over the Arabian Sea while en route to Karachi, Pakistan. The aircraft, operated by private carrier K2 Airways, lost contact with air traffic control on Tuesday evening after the crew reported a problem with the navigational system.
A search and rescue operation has been launched to locate the missing freighter. Flight tracking data showed the aircraft experienced sharp changes in altitude, including a rapid plunge, a brief surge, and then a final steep dive before contact was lost about 155 nautical miles (287 km) west of Karachi. The missing aircraft is a converted freighter, two generations older than the 737 MAX, and was the only plane in K2 Airways' fleet.