Air Algerie cockpit voice recorder unreadable

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Air Algerie cockpit voice recorder unreadable
This photo provided Friday July 25, 2014 by the French army shows a helicopter at the site of the plane crash in Mali. French soldiers secured a black box from the Air Algerie wreckage site in a desolate region of restive northern Mali on Friday, the French president said. Terrorism hasn't been ruled out as a cause, although officials say the most likely reason for the catastrophe that killed all onboard is bad weather. At least 116 people were killed in Thursday's disaster, nearly half of whom were French. (AP Photo/ECPAD)
GAO, MALI - JULY 25 : The image provided on July 25,2014 by the French Defence communication and audiovisual production (ECPAD) show the site of the plane crash in Mali on July 24, 2014. The Flight AH 5017 was carrying 116 passengers and six crew members on board. (Photo by Pool/ECPAD/Anadolu Agency/Getty Images)
This photo provided on Friday, July 25, 2014, by the Burkina Faso Military shows the site of the plane crash in Mali. French soldiers secured a black box from the Air Algerie wreckage site in a desolate region of restive northern Mali on Friday, the French president said. Terrorism hasn't been ruled out as a cause, although officials say the most likely reason for the catastrophe that killed all onboard is bad weather. At least 116 people were killed in Thursday's disaster, nearly half of whom were French. (AP Photo/Burkina Faso Military)
This photo provided on Friday, July 25, 2014, by the Burkina Faso Military shows the site of the plane crash in Mali. French soldiers secured a black box from the Air Algerie wreckage site in a desolate region of restive northern Mali on Friday, the French president said. Terrorism hasn't been ruled out as a cause, although officials say the most likely reason for the catastrophe that killed all onboard is bad weather. At least 116 people were killed in Thursday's disaster, nearly half of whom were French. (AP Photo/Burkina Faso Military)
This photo provided on Friday, July 25, 2014, by the Burkina Faso Military shows a man at the site of the plane crash in Mali. French soldiers secured a black box from the Air Algerie wreckage site in a desolate region of restive northern Mali on Friday, the French president said. Terrorism hasn't been ruled out as a cause, although officials say the most likely reason for the catastrophe that killed all onboard is bad weather. At least 116 people were killed in Thursday's disaster, nearly half of whom were French. (AP Photo/Burkina Faso Military)
Map shows path of Flight 5017, Algeria and Burkina Faso; 1c x 3 inches; 46.5 mm x 76 mm;
An arrival information screen shows the delayed Air Algerie flight 5017 (top) at the Houari Boumediene airport near Algiers, Algeria, Thursday, July 24, 2014. An Air Algerie flight carrying 116 people from Burkina Faso to Algeria's capital disappeared from radar early Thursday over northern Mali and "probably crashed" according to the plane's owner and government officials in France and Burkina Faso. (AP Photo/Sidali Djarboub)
The logo of the Air Algerie company office, at the Opera avenue in Paris Thursday July 24, 2014. A flight operated by Air Algerie has disappeared from radar while traveling from Burkina Faso in West Africa to Algiers. Authorities say it was carrying over 100 passengers and crew when air navigation services lost track of the Swiftair plane 50 minutes after takeoff earlier this morning. (AP Photo/Remy de la Mauviniere)
Family members and friends await news on Air Algeria Flight 5017 which crashed in Mali on Thursday at the airport in Ouagadougou, Burkina Faso, Friday, July 25, 2014. French soldiers recovered a black box from the Air Algerie wreckage site in a desolate region of restive northern Mali on Friday, officials said. Terrorism hasn't been ruled out as a cause, although officials say the most likely reason for the catastrophe that killed all 118 people onboard is bad weather. (AP Photo/Brahima Ouedraogo)
This photo provided Friday July 25, 2014 by the French army shows the site of the plane crash in Mali, taken by night by a Reaper drone with InfraRed technology. French soldiers secured a black box from the Air Algerie wreckage site in a desolate region of restive northern Mali on Friday, the French president said. Terrorism hasn't been ruled out as a cause, although officials say the most likely reason for the catastrophe that killed all onboard is bad weather. At least 116 people were killed in Thursday's disaster, nearly half of whom were French. (AP Photo/ECPAD)
This photo taken on Friday, May 16, 2014 shows an MD-83 aircraft in the livery of Swiftair landing at Zaventem Airport Brussels. An Air Algerie flight carrying over 100 people from Burkina Faso to Algeria's capital disappeared from radar early Thursday over northern Mali after heavy rains were reported, according to the plane's owner and government officials in France and Burkina Faso. Air navigation services lost track of the MD-83 about 50 minutes after takeoff from Ougadougou, the capital of Burkina Faso, at 0155 GMT (9:55 p.m. EDT Wednesday), the official Algerian news agency APS said. Air Algerie Flight 5017 was being operated by Spanish airline Swiftair, the company said in a statement. The Spanish pilots' union said the plane belonged to Swiftair and it was operated by a Spanish crew. (AP Photo/Kevin Cleynhens)
This photo taken on Friday, May 16, 2014 shows an MD-83 aircraft in the livery of Swiftair landing at Zaventem Airport Brussels. An Air Algerie flight carrying over 100 people from Burkina Faso to Algeria's capital disappeared from radar early Thursday over northern Mali after heavy rains were reported, according to the plane's owner and government officials in France and Burkina Faso. Air navigation services lost track of the MD-83 about 50 minutes after takeoff from Ougadougou, the capital of Burkina Faso, at 0155 GMT (9:55 p.m. EDT Wednesday), the official Algerian news agency APS said. Air Algerie Flight 5017 was being operated by Spanish airline Swiftair, the company said in a statement. The Spanish pilots' union said the plane belonged to Swiftair and it was operated by a Spanish crew. (AP Photo/Kevin Cleynhens)
A picture taken on July 24, 2014, shows the 'delayed' status of flight AH 5017 from Ouagadougou to Algiers on the departure/arrival time flight board at the Houari-Boumediene International Airport. An Air Algerie plane with around 120 people on board including French and Spanish nationals went missing during a flight from Burkina Faso to Algiers, company sources and officials said. AFP PHOTO/FAROUK BATICHE (Photo credit should read FAROUK BATICHE/AFP/Getty Images)
A police officer stands on July 24, 2014 at the entrance of a crisis cell at the Roissy-Charles-de-Gaulle airport in Roissy-en-France, Paris' northern suburb, after an Air Algerie plane carrying 50 French nationals went missing after taking off from Burkina Faso for Algiers. France's civil aviation body said crisis cells had been set up at the airports of Paris and Marseille. An Air Algerie source said there were about 110 people on board. AFP PHOTO / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)
A picture taken on July 24, 2014 shows the entrance of Houari-Boumediene International Airport in Algiers. An Air Algerie plane with around 120 people on board including French and Spanish nationals went missing during a flight from Burkina Faso to Algiers, company sources and officials said. AFP PHOTO/FAROUK BATICHE (Photo credit should read FAROUK BATICHE/AFP/Getty Images)
A photo taken on July 24, 2014 shows an Air Algerie airlines office in Paris. Many French nationals are thought to be on board an Air Algerie jet that went missing after taking off from Burkina Faso for Algiers, French Transport Minister Frederic Cuvillier said on July 24. A source in Mali said that contact with the McDonnell Douglas MD-83 was lost over Gao in north Mali, a region that was seized by jihadists groups for several months in 2012 and that remains very unstable despite the Islamists being driven out in a French-led offensive. AFP PHOTO / STEPHANE DE SAKUTIN (Photo credit should read STEPHANE DE SAKUTIN/AFP/Getty Images)
A picture taken on July 24, 2014 shows an ad for Air Algerie call center at the Houari-Boumediene International Airport in Algiers. An Air Algerie plane with around 120 people on board including French and Spanish nationals went missing during a flight from Burkina Faso to Algiers, company sources and officials said. AFP PHOTO/FAROUK BATICHE (Photo credit should read FAROUK BATICHE/AFP/Getty Images)
A photo taken on July 24, 2014 shows the window of an Air Algerie airlines office in Paris. Many French nationals are thought to be on board an Air Algerie jet that went missing after taking off from Burkina Faso for Algiers, French Transport Minister Frederic Cuvillier said on July 24. A source in Mali said that contact with the McDonnell Douglas MD-83 was lost over Gao in north Mali, a region that was seized by jihadists groups for several months in 2012 and that remains very unstable despite the Islamists being driven out in a French-led offensive. AFP PHOTO / STEPHANE DE SAKUTIN (Photo credit should read STEPHANE DE SAKUTIN/AFP/Getty Images)
A person inside the Swiftair offices takes some papers out of a window after the press arrived at their offices in Madrid, Spain, Thursday, July 24, 2014. A flight operated by Air Algerie and carrying over 100 people from Burkina Faso to Algeria's capital disappeared from radar early Thursday, the plane's owner said. Swiftair, a private Spanish airline, said the plane left Burkina Faso for Algiers at 0117 GMT Thursday (9:17 p.m. EDT Wednesday), but had not arrived at the scheduled time of 0510 GMT (1:10 a.m. EDT Thursday). (AP Photo/Paul White)
Journalists gather outside the Swiftair offices in Madrid, Spain, Thursday, July 24, 2014. A flight operated by Air Algerie and carrying over 100 people from Burkina Faso to Algeria's capital disappeared from radar early Thursday. Swiftair, a private Spanish airline, said the aircraft left Burkina Faso for Algiers at 0117 GMT Thursday (9:17 p.m. EDT Wednesday), but had not arrived at the scheduled time of 0510 GMT (1:10 a.m. EDT Thursday). (AP Photo/Paul White)
A television camera operator mounts a satellite dish on top of a van outside the Swiftair offices in Madrid, Spain, Thursday, July 24, 2014. A flight operated by Air Algerie and carrying 116 people from Burkina Faso to Algeria's capital disappeared from radar early Thursday, the plane's operator said. Swiftair, a private Spanish airline, said the plane carrying over 100 passengers and crew left Burkina Faso for Algiers at 0117 GMT Thursday (9:17 p.m. EDT Wednesday), but had not arrived at the scheduled time of 0510 GMT (1:10 a.m. EDT Thursday). (AP Photo/Paul White)
Passersby walk past the Air Algerie company office, on the Opera Avenue in Paris Thursday July 24, 2014. A flight operated by Air Algerie has disappeared from radar while traveling from Burkina Faso in West Africa to Algiers. Authorities say it was carrying over 100 passengers and crew when air navigation services lost track of the Swiftair plane 50 minutes after takeoff earlier this morning. (AP Photo/Remy de la Mauviniere)
GAO, MALI - JULY 25 : The image provided on July 25,2014 by the French Defence communication and audiovisual production (ECPAD) show the site of the plane crash in Mali on July 24, 2014. The Flight AH 5017 was carrying 116 passengers and six crew members on board. (Photo by Pool/ECPAD/Anadolu Agency/Getty Images)
GAO, MALI - JULY 25 : The image provided on July 25,2014 by the French Defence communication and audiovisual production (ECPAD) show the site of the plane crash in Mali on July 24, 2014. The Flight AH 5017 was carrying 116 passengers and six crew members on board. (Photo by Pool/ECPAD/Anadolu Agency/Getty Images)
GAO, MALI - JULY 25 : The image provided on July 25,2014 by the French Defence communication and audiovisual production (ECPAD) show the site of the plane crash in Mali on July 24, 2014. The Flight AH 5017 was carrying 116 passengers and six crew members on board. (Photo by Pool/ECPAD/Anadolu Agency/Getty Images)
GAO, MALI - JULY 25 : The image provided on July 25,2014 by the French Defence communication and audiovisual production (ECPAD) show the site of the plane crash in Mali on July 24, 2014. The Flight AH 5017 was carrying 116 passengers and six crew members on board. (Photo by Pool/ECPAD/Anadolu Agency/Getty Images)
GAO, MALI - JULY 25 : The image provided on July 25,2014 by the French Defence communication and audiovisual production (ECPAD) show the site of the plane crash in Mali on July 24, 2014. The Flight AH 5017 was carrying 116 passengers and six crew members on board. (Photo by Pool/ECPAD/Anadolu Agency/Getty Images)
Investigators from the French Air Transport Gendarmerie and the French Criminal Analysis Unit (Institut de recherche criminelle de la gendarmerie nationale, IRCGN) gather around their gear on July 25, 2014 at Velizy-Villacoublay's military airport, west of Paris, before leaving for the crash site of Air Algerie flight AH5017 in Mali's Gossi region, west of Gao. France announced today that all people on board the Air Algerie passenger plane died in the tragedy, including several families that were wiped out. The occupants included 54 French citizens, some of them dual nationals, as well as people from Burkina Faso, Lebanon, Algeria, Spain, Canada, Germany and Luxembourg. The cause of the crash has not yet been determined, but it was being increasingly blamed on bad weather which had forced the pilots to divert course. AFP PHOTO / FRANCOIS GUILLOT (Photo credit should read FRANCOIS GUILLOT/AFP/Getty Images)
This photo provided on Friday, July 25, 2014, by the Burkina Faso Military shows a part of the plane at the crash site, in Mali. French soldiers secured a black box from the Air Algerie wreckage site in a desolate region of restive northern Mali on Friday, the French president said. Terrorism hasn't been ruled out as a cause, although officials say the most likely reason for the catastrophe that killed all onboard is bad weather. At least 116 people were killed in Thursday's disaster, nearly half of whom were French. (AP Photo/Burkina Faso Military)
This photo provided on Friday, July 25, 2014, by the Burkina Faso Military shows a part of the plane at the crash site, in Mali. French soldiers secured a black box from the Air Algerie wreckage site in a desolate region of restive northern Mali on Friday, the French president said. Terrorism hasn't been ruled out as a cause, although officials say the most likely reason for the catastrophe that killed all onboard is bad weather. At least 116 people were killed in Thursday's disaster, nearly half of whom were French. (AP Photo/Burkina Faso Military)
A man wearing a shirt with a Swiftair logo and carrying a Swiftair folder enters the Spanish airline's office in Madrid, Spain, Thursday, July 24, 2014. An Air Algerie flight carrying 116 people from Burkina Faso to Algeria's capital disappeared from radar early Thursday over northern Mali, officials said. The flight was being operated by Spanish airline Swiftair, the company said in a statement, and the plane belonged to Swiftair. The flight crew was Spanish. (AP Photo/Paul White)
French policemen surround an Air Algerie passenger plane checking a luggage compartment on the tarmac of the suburban Roissy Charles de Gaulle airport Saturday April 26, 1997. Air Algerie, Algeria's national carrier, resumed flights Friday to Paris after a two-year hiatus instigated by French security concerns and prolonged by bickering on both sides. Flights were suspended in the summer of 1995, months after a highjacking of an Air France plane by Muslim militants waging an insurgency in Algeria since 1992.(AP Photo/Jacques Brinon)
General Gilbert Diendere, the Chief of the Military Staff of the Burkinabe President, in charge of the crisis centre, looks on during a press conference in Ouagadougou, on July 25, 2014, after a visit on the crash site of the Air Algerie plane, which crashed over Mali on July 24 with more than 100 people on board. The wreckage of the McDonnell Douglas MD-83 plane, which was flying from Ouagadougou in Burkina Faso to the Algerian capital Algiers, was located 50 kilometres (31 miles) north of the Burkina Faso border in Mali's Gossi region. AFP PHOTO/ SIA KAMBOU (Photo credit should read SIA KAMBOU/AFP/Getty Images)
French Interior Minister Bernard Cazeneuve arrives on July 26, 2014 at the Elysee palace in Paris for a crisis meeting with the French President and other ministers about the Air Algerie jetliner that crashed in Mali. All passengers and crew on board an Air Algerie jetliner that crashed in Mali died in the tragedy, which completely wiped out several families, France boring the brunt of the disaster, with some 54 French citizens among the overall death toll of between 116 and 118, according to unexplained conflicting figures given by the carrier and French authorities. AFP PHOTO / FRANCOIS GUILLOT (Photo credit should read FRANCOIS GUILLOT/AFP/Getty Images)
Investigators from the French Air Transport Gendarmerie and the French Criminal Analysis Unit (Institut de recherche criminelle de la gendarmerie nationale, IRCGN) gather on July 25, 2014 at Velizy-Villacoublay's military airport, west of Paris, before leaving for the crash site of Air Algerie flight AH5017 in Mali's Gossi region, west of Gao. France announced today that all people on board the Air Algerie passenger plane died in the tragedy, including several families that were wiped out. The occupants included 54 French citizens, some of them dual nationals, as well as people from Burkina Faso, Lebanon, Algeria, Spain, Canada, Germany and Luxembourg. The cause of the crash has not yet been determined, but it was being increasingly blamed on bad weather which had forced the pilots to divert course. AFP PHOTO / FRANCOIS GUILLOT (Photo credit should read FRANCOIS GUILLOT/AFP/Getty Images)
Investigators from the French Air Transport Gendarmerie and the French Criminal Analysis Unit (Institut de recherche criminelle de la gendarmerie nationale, IRCGN) wait on July 25, 2014 at Velizy-Villacoublay's military airport, west of Paris, before leaving for the crash site of Air Algerie flight AH5017 in Mali's Gossi region, west of Gao. France announced today that all people on board the Air Algerie passenger plane died in the tragedy, including several families that were wiped out. The occupants included 54 French citizens, some of them dual nationals, as well as people from Burkina Faso, Lebanon, Algeria, Spain, Canada, Germany and Luxembourg. The cause of the crash has not yet been determined, but it was being increasingly blamed on bad weather which had forced the pilots to divert course. AFP PHOTO / FRANCOIS GUILLOT (Photo credit should read FRANCOIS GUILLOT/AFP/Getty Images)
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LE BOURGET, France (AP) - French investigators trying to pinpoint the cause of the Air Algerie crash in northern Mali say the black box that recorded conversations between the pilots is unreadable.

Remi Jouty, president of France's national aviation safety agency, says some of the plane's recording devices allowed investigators to trace its fast descent through stormy weather on July 24, but the probe had not yet excluded other possible causes, including error or deliberate actions in the crash. All 116 people on board were killed, nearly half of them French.

Jouty said Thursday it wasn't clear why - or when during the flight - the recorder malfunctioned on the MD-83.

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