The massive hunt for Indian Air Force's AN-32 aircraft that went missing over the Bay of Bengal on Friday with 29 people on board has entered its fourth day.
Images obtained from satellites have pointed to possible floating objects but nothing has been found yet.
"Indigenous imagery satellite did give us some pointers to possible floating objects. The area indicated are being searched intensively by ships and aircraft. Nothing sighted as yet," defence sources said.
Air Force authorities have lodged a formal complaint with Tamil Nadu police over the missing aircraft.
The plane left the Tambaram air base near Chennai at 8.30 am on Friday and was to have landed at Port Blair around 11.45 am. It fell off the radar at 9.12 am, 280 km east of Chennai. It made the last radio contact at 8:46 am, 16 minutes after take-off, when the pilot reported that "everything is normal".
Air Force and Navy officials said the search was continuing but no signs of any wreckage had so far been found.
As many as 18 Navy and Coast Guard ships including a submarine, and eight aircraft like P 81, C 130 and Dorniers are involved in a massive search operation in the Bay of Bengal, about 150 nautical miles east of Chennai, where inclement weather appeared to be a hurdle.
There are more than 100 Russian-made AN-32s in service with the IAF. It is an aircraft that can fly for up to four hours without refueling and can operate in all weather conditions.
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