The chief investigator, Ayman al-Moqadem, said late yesterday that Airbus had given Egyptian authorities information on the Emergency Locator Transmitter, or ELT, from the doomed aircraft.
An official from the Egyptian investigation team today clarified that the beacon information was from the day of the crash, May 19, and that no new signal had been found. An Airbus official said he was unaware of any ELT received or given to the Egyptians.
The ELT's signal is too weak to transmit information from underwater, unlike the locator pings emitted by the flight data and cockpit voice recorders, known as the black box.
Al-Moqadem stressed that the black boxes have not been found, which he said requires highly sophisticated technology.
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But he said the search was now being conducted in a 5-kilometer area. He did not clarify how long the search has been narrowed to that area.
A French naval oceanographic research ship, Laplace, carrying a long-range acoustic system able to detect signals from the black box is headed to the crash site, France's air accident investigation agency, the BEA, said in a statement.
Earlier, Egyptian officials had said the ship had already arrived at the site.
Eight days after the plane crashed off Egypt's northern coast on a Paris to Cairo flight, the cause of the tragedy still has not been determined. Ships and planes from Egypt, Greece, France, the United States and other nations have been searching the Mediterranean north of the Egyptian port of Alexandria for the jet's voice and flight data recorders, as well as more bodies and parts of the aircraft.
Egypt's civil aviation minister Sherif Fathi has said he believes terrorism is a more likely explanation than equipment failure or some other catastrophic event.