Helicopter with 7 people on board, including ONGC employees, has lost contact with Air Traffic Control (ATC) 30 nautical miles off Mumbai. "We are working towards finding the chopper at the earliest", a senior ONGC official said.
"1 Pawanhans Helicopter of ONGC flying from Juhu, Mumbai to ODA Offshore Development Area lost at sea this morning". The last contact it established was around 10.30 am, with an air traffic control manned from an oil rig. Choppers and aircraft from other bases were also deployed to search the missing copter.
It was a chopper operated by Pawan Hans, India's state owned helicopter operator. It was scheduled to land at ONGC's North Field oil rig at 10.58 am, but did not, The Indian Express reported.
Sources said the helicopter - a Dauphin N3, bearing registration number VT-PWA - was on a normal sortie and was supposed to reach the oil rig at Bombay High at 11 am.
The Indian Coast Guard said it had diverted a ship and an aircraft to region where it believes the helicopter went missing.
Following the incident, Union Petroleum Minister Dharmendra Pradhan spoke to Defence minister Nirmala Sitharaman.