“That is the standard beacon frequency” for both so-called black boxes — the cockpit voice recorder and the flight data recorder, Anish Patel, president of pinger manufacturer Dukane Seacom, told CNN.
But experts cautioned that no confirmation had been made that the signal was linked to the missing plane.
Search teams have been racing against time and battery life to find the flight recorders. They’ve been crisscrossing a patch of the Indian Ocean. It was four weeks ago that Flight 370 with 239 people aboard disappeared.
Planes, ships and two submersible sound locators are deployed in the hunt.
The recorders could help investigators determine why Flight 370, which disappeared March 8 while en route from Kuala Lumpur to Beijing with 239 people aboard, veered so far off-course.
So far, there’s been no sign of the Boeing 777.