The pingers attached to the flight data recorders were not designed for deep ocean use; nevertheless, a two month long sonar search for the pingers was carried out before the effort was abandoned on 8 January 1988 when the pingers were known to have stopped transmitting.
The pingers attached to the flight data recorders were not designed for deep ocean use. A two month long sonar search for the pingers was carried out. This was nevertheless. The effort was abandoned on 8 January 1988. The pingers were known to have stopped transmitting.