The Navy has ordered a Board of Inquiry into the crash that occurred off the Goa coast last night.
One pilot has been rescued while another pilot and an observer who were on-board are missing, the Navy said.
"Six Naval ships and four aircraft were immediately deployed for search which is still continuing to locate the two officers. The Navy has ordered a Board of Inquiry into the accident," a Navy press release said here.
The Dornier surveillance aircraft was on a routine training sortie when it 'ditched' at sea, about 20 nautical miles south west of Goa last night.
The aircraft is feared to have ditched soon thereafter, it added.