The emergency beacons attached to the flight’s data recorders will only transmit a signal for about 20 more days.

Amid all the controversy and speculation surrounding the Flight 447 crash, Air France has sent a memo to its pilots informing them that speed measurement instruments will be replaced on all medium- and long-haul Airbus planes, AP reports.

Forty-one bodies have been found in the Atlantic thus far, two on Saturday, 14 on Sunday, eight on Monday, and 17 on Tuesday, all confirmed to have been on Air France Flight 447, Brazilian officials said Wednesday.

French authorities are urging searchers to show “extreme prudence” before identifying wreckage found in the Atlantic as being from Air France Flight 447, after Brazilian workers incorrectly publicized they had found debris from the missing plane Thursday.

The mystery surrounding Air France Flight 447 continued to grow Thursday as conflicting reports from Spanish pilots and Brazilian experts regarding the cause of the plane’s crash emerged, CNN reports.

French investigators say they are not optimistic the black box recorders from Air France Flight 447, now buried deep in the icy waters of the Atlantic Ocean, may ever be found, BBC reports.

A BBC corespondent and several experts are reporting that the plane would have had to have undergone several “traumas” to have fallen from the sky. The absence of a distress signal from the experienced pilot suggests that whatever happened to the plane happened very, very quickly.

An Air France plane carrying 228 people vanished over the Atlantic Ocean after reporting a short circuit caused by a possible lightning strike, the BBC reports.