2010年6月5日土曜日

AF447一周忌

AF447が墜落してから一年が経った。
遺族らは、未だブラックボックスの回収を望んでいる。
仏海軍と仏航空機事故調査局(BAE)との間で捜査方針でもめているとの報道も
ある。どちらに被害者遺族がおり、気持ちは想像できるが無理を言っている
ように聞こえる。3回調査を行い、2000万ユーロを費やしたようだ。
最近の大型旅客機は、ICAOから推奨されて、二台のCVFDRが搭載されている
ものが多いと聞く。それでも、Underwater Locater Beaconは30日しか音波を
発生できない。
規格制定時、30日あればCVFDRは見つかる。見つからない場合はあきらめる。
としていたようだ。20世紀くらいまではそれでよかったが、航空機が増便され、
航空機事故が多発することにより、CVFDRの価値が見直された。
CVFDRが要らない安全な運行ができれば一番だと思う。

AF447 事故調査中
AF447 消息不明
AR447事故 ピトー管変更勧告


Families remember a year on from Rio-Paris plane crash AFP


---One year on, families of Air France victims seek answers---
By Helena de Moura, CNN
June 1, 2010 -- Updated 1104 GMT (1904 HKT)
http://edition.cnn.com/2010/WORLD/europe/05/31/france.brazil.crash.anniversary/?hpt=Sbin
(CNN) -- On the one-year anniversary marking the crash of Air France Flight 447, which killed 228 people when it fell into the Atlantic Ocean, victims' families will push for more thorough searches and more evidence, a family activist said Monday.

The Airbus A330-200 crashed into the ocean as it headed from Brazil to France, in one of Air France's worst tragedies.

A series of ceremonies will take place in Paris on Tuesday; a Mass was held Monday in Rio de Janeiro.

Brazilian businessman Martin Van Sluys, who has traveled the same Rio de Janeiro-Paris route numerous times to meet with French officials, said he will not give up his fight for a comprehensive report that can explain the causes behind the crash that cost the life of his sister.

"I keep thinking to myself as I travel in these planes, this could be me one day, this could be my son. There are so many planes flying around that could have the same issues," said Van Sluys, who acts as spokesman for families of the crash victims.

According to Brazil's air force, on May 31, 2009, the crew of AF Flight 447 made their last contact with Brazil's Atlantic Control Center (ACC) at 22:33 GMT, informing the center of the plane's position as it crossed the Atlantic.

Soon after, Brazil's air control contacted Dakar's control center in North Africa and reported that AF 447 was entering an area on its route known for constant bands of severe turbulence, officials said.

There was no further contact with the plane.

In the months following the crash, investigators moved through three separate phases of the incident probe.

In May, France' air investigation agency, BEA, announced the end of the third phase of its investigation without citing a specific cause of the crash. The plane's "black box" flight recorder remains missing in the ocean, according to Air France.

"We have demanded a fourth phase," said Van Sluys.

If financially-troubled Air France commits to a fourth search phase that would cost the company millions of euros in personnel time and resources, company officials may come close to meeting some of the victims' demands, Van Sluys said.

"My objective is to see a final report with concrete evidence," said Van Sluys. "We know how costly the truth could be to some of the interest groups behind these investigations, from the manufacturers to the suppliers."

"But what keeps me going if this had happened to me, my sister, who was a journalist and never accepted injustice, would have done this for me," he said.


---Air France 447, One Year Out---
By Peter Tyson on June 1, 2010 1:26 PM
http://www.pbs.org/wgbh/nova/insidenova/2010/06/air-france-447-one-year-out.html

Today marks the one-year anniversary of the loss of Air France Flight 447 over the Atlantic Ocean, and investigators are no closer to resolving the mystery of why the plane crashed. The flight, from Rio de Janeiro to Paris, disappeared on June 1, 2009 after entering a zone of severe thunderstorms, killing all 228 people on board.

Last week, the French Bureau of Accident Inquiry, known by its French acronym BEA, called off its third attempt to locate the plane's flight recorders. (Soon after the accident, searchers did recover 50 bodies as well as scattered pieces of the plane, including part of the tail section seen here.) The BEA, which has issued two draft reports about the accident but has drawn no conclusions as to the cause, has not said whether it will conduct a fourth search.

What little is known comes from automated messages that the plane sent to Air France just before the plane vanished. The so-called pitot tubes, external ports that measure airspeed, apparently failed by becoming clogged with ice or water. The aircraft's autopilot, which needs to know the airspeed to function properly, switched off. The plane may then have gone into a stall, from which the pilots were unable to recover.

The lack of data beyond the automated messages, and the failure to find the "black boxes" that might provide those data, has renewed calls for developing ways to transmit vital flight data to the ground in real time. The costs are prohibitive, but so are searches -- the BEA hunt so far has cost 20 million euros, reports the London Times. And pinning down the cause of a crash is the only way to ensure that a similar failure doesn't occur in the future -- something that everyone who flies is keenly interested in.

NOVA is now working on a documentary about the Air France crash and investigation. The program will tentatively air this fall.

"The job of our film is to try, by piecing together the known evidence, to come up with some conclusions and a credible explanation of what could have happened," says executive producer Julian Ware. "But obviously we can only be certain if they find the black boxes."

One of the questions the film will raise concerns the degree of automation in modern aircraft and pilots' consequent ability to handle emergency situations. Pilots are encouraged to fly on autopilot and otherwise rely on fly-by-wire systems because it saves fuel. But it means that pilots are "task-underloaded," Ware says.

"When these automated systems fail, suddenly pilots go from a low-task saturation to an enormous overload task saturation, and they don't have the flying hours now to deal with the situation," Ware says. Nor do they necessarily know how to cope with a stall. "It's no reflection on the pilots," Ware says; it's just that practicing recovery from a stall is not something pilots can train on in commercial flight simulators, which cannot reproduce stalls because of the extreme forces involved.

Even if a fourth search for the black boxes is launched, finding them is a long shot, Ware says, and not just because their electronic pinging ceased long ago. The plane went down over an undersea mountain range, and the search area covers hundreds of square miles. Even when the BEA briefly narrowed its search field in early May, one expert said it was "like looking for two shoe boxes in an area the size of Paris."

Nevertheless, families of some of the victims continue to press for a fourth search. "Our grief and our distress remain constant," Jean-Baptiste Audousset, president of a French Flight 447 families' association, said yesterday at a news conference in Paris. "The trauma is even more terrible because we still do not know how their last moments of life were spent."


---Families honor Air France crash victims a year on
By CECILE ROUX (AP) - 20100601
http://www.google.com/hostednews/ap/article/ALeqM5hlZh2wEGQa6O6vY099iHUPaMmW8wD9G2KMG00

PARIS - Families mourned in more than a dozen languages and the Air France choir performed Verdi's Requiem in a ceremony Tuesday honoring the 228 people killed when a Rio de Janeiro-Paris flight crashed into the Atlantic Ocean a year ago.

Robert Soulas was one of about 1,000 relatives attending a ceremony at the Paris Floral Park and the unveiling of a monument to honor the victims of Flight 447 at the French capital's renowned Pere Lachaise cemetery.

He told The Associated Press that his biggest hope is that the flight recorders are found, and with them answers.

"Our emotion is more intense than ever because we don't have many answers," said Soulas, who lost his daughter in the crash.

Transport Minister Dominique Bussereau promised that the investigation into why the plane crashed will continue. He said he will set up a group to meet regularly with families to inform them of progress.

Tuesday's ceremony was translated into 15 languages, and texts were read by a rabbi, a priest, a pastor, an imam, as well as relatives and Air France personnel.

In the afternoon, flowers were laid at a monument inscribed with 228 birds, representing the victims. A similar memorial was inaugurated last year in Rio de Janeiro.

The flight crashed June 1, 2009 after running into a strong thunderstorm.

A third, euro13 million ($15.8 million) search effort ended last week and failed to find the flight recorders.

Search teams have failed to find the "black box" voice and data recorders. Without those, investigators may never learn why the plane crashed in a remote part of the Atlantic Ocean, in depths of up to 4,000 meters (13,120 feet).

Automatic messages sent by the plane's computers just before it crashed show it was receiving false air speed readings from airplane sensors known as Pitot tubes. Investigators have insisted that the crash was likely caused by a series of failures and not just the Pitot tubes.

Air France CEO Pierre-Henri Gourgeon and President Jean-Cyril Spinetta were present along with 200 Air France staff.

In Rio de Janeiro, about 80 people - family members, friends, Air France workers and France's ambassador to Brazil, Yves Saint-Geours - somberly filed into a Catholic church in the Ipanema beachside neighborhood to mark the anniversary of the accident.

"I feel so bad, it was such a tragedy," said a weeping Ligia Valle, whose niece, Luciana Seba, died in the accident. "Her body was never found. I miss her physical presence so much."

After the ceremony in the church, family members planned to gather at a memorial in a park overlooking the ocean.


---Search for Air France crash black box suspended---
Tue May 25, 2010 1:38pm EDT
http://www.reuters.com/article/idUSTRE64O4I820100525

The suspension of the search underlined the huge difficulty of finding the black boxes on the vast and craggy ocean floor, but authorities denied a newspaper report of conflict between the French navy and the BEA air accident investigation body.

"The third phase will end this evening, and for the time being we have not found them," said a French navy spokesman.

Air France flight 447 from Rio de Janeiro to Paris plunged into the ocean during a storm on June 1 last year, killing 228 people, and since then a search has been under way for clues to the cause of the accident.

The BEA itself said it would not issue a progress report for the time being. It also declined to comment on the article in the daily Le Figaro that it had clashed with the navy over aspects of the search.

The French navy spokesman denied that there was any conflict with the BEA over the handling of the search for the recorders.

"There is no conflict with the BEA," he said. "We are still making discoveries and as we go along, we inform the BEA to see if they're interested in it."

"We are not responsible for leading the search," he added.

Earlier this month, authorities said they had found what could be the first solid clues to the location of the black boxes but warned there was no guarantee they would be found.

Speculation about the cause of the crash has focused on possible icing of the aircraft's speed sensors, which appeared to give inconsistent readings seconds before the plane vanished.

Black box flight recorders are designed to emit homing signals for around 30 days, and two sophisticated salvage vessels have been scouring a 3,000-square-km area to try to locate the Airbus A330 recorders.

(Reporting by Sudip Kar-Gupta, Editing by Michael Taylor)

0 コメント: