Showing posts with label Air traffic control. Show all posts
Showing posts with label Air traffic control. Show all posts

Friday, June 5, 2009

Debris, Oil Slick from Air France Flight Found off Brazilian Coast


Debris, Oil Slick from Air France Flight Found off Brazilian Coast

(Source The Chosun Ilbo English, Korean Daily News) Brazilian search planes are recovering what officials say is the wreckage of Air France Flight 447 which disappeared Monday off Brazil's northern coast. The debris will be examined for serial numbers and other markings to confirm that it is the missing plane. The Airbus A330 vanished about four hours after leaving Rio de Janeiro, bound for Paris.

Search planes found a 20 kilometer long oil slick, apparently left by the Air France jet.
Flight 447 left Rio de Janeiro bound for Paris on Monday. It carried 228 people. Debris found in the ocean could offer clues on why the four year old airplane went down.
"The nature of the debris, the density, the position, make no doubt that we have the first material evidence that are linked to Air France 447," said Commander Christophe Prazuck, a spokesman for France's military.

A meteorologist with AccuWeather tells VOA that Flight 447 may have encountered 160-kilometer-per-hour winds as it flew into strong storms along the equator.
The area is called the Inter-Tropical Convergence Zone. It's where the trade winds between the Northern and Southern hemisphere meet.
U.S. pilots who fly this route say the zone's fierce thunderstorms carry moisture lower and therefore often do not appear on radar. Paul Zurkowski, a commercial pilot who flies to South America, says darkened cockpits help. "We'll turn off the interior lights and turn on the exterior lights to see more of what's outside, more of the clouds," he said.

Some experts point to severe turbulence or lightning strikes as to the cause. But planes are built to withstand strikes, so pilots say it's doubtful that lightning would be catastrophic.
Zurkowski says a few years back his plane started shaking and he realized it had been struck, just below his seat. "We didn't see any damage to the airplane airborne, it didn't affect our radios or navigation equipment," he said. "But it did put small holes in the airplane which were found by maintenance when we landed."
Shortly before it vanished, Flight 447 transmitted automatic messages reporting failures in its pressurization and electrical systems. Read Article...
http://english.chosun.com/site/data/html_dir/2009/06/05/2009060500776.html


Air France crash mystery deepens

(Source France 24) The mystery surrounding the crash of an Air France plane off the coast of Brazil deepened after Brazilian officials said items they had pulled from the sea were not in fact debris from the downed Airbus.

The search by ships for wreckage from Air France flight AF 477, which came down early Monday as it was flying from Rio de Janeiro to Paris with 228 people on board, continued in a zone where confirmed items from the plane had been spotted earlier in the week.
"Up to now, no material from the plane has been recovered," Brigadier Ramon Cardoso, director of Brazilian air traffic control, told reporters in the northeastern city of Recife late Thursday.

That contradicted a statement Cardoso made earlier Thursday when he said a pallet and two buoys plucked from the Atlantic by navy crews were the first pieces of the Air France crash.
In fact, Cardoso admitted later, they were nothing more than sea "trash," probably from a ship, as was a big oil patch originally described as a fuel slick from the French jet.

Several Brazilian navy vessels are looking for debris from the plane, including a seat and a big chunk of what appeared to be fuselage, sighted by air force aircraft on Tuesday and Wednesday.
Defense Minister Nelson Jobim has said there was "no doubt" that the debris spotted from the air came from flight AF 477, and that they marked the area close to where the plane hit the ocean.
The French government, which is in charge of the probe into the crash, has sent investigators to Brazil to inspect any debris that could be recovered from the zone, around 1,000 kilometers (600 miles) off-shore, and take them back to France.
Speculation over what caused the accident has ranged from a massive, lightning-packed storm in the area at the time, to turbulence, to pilot error or a combination of factors.
No mayday call was received from the plane, just a series of data transmissions signaling it had lost power and then had either broken up or gone into a fatal dive. Read Article...
http://www.france24.com/en/20090605-air-france-crash-mystery-deepens

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Thursday, June 4, 2009

Common GPS could help better track airline flights

Common GPS could help better track airline flights
GPS tracks phones, cars, but not planes; Air France crash renews call for end to radar systems

CHICAGO (AP) -- Get lost in the woods and a cell phone in your pocket can help camping buddies find you. Drive into a ditch and GPS in your car lets emergency crews pinpoint the crash site. But when a transcontinental flight is above the middle of the ocean, no one on the ground can see exactly where it is -- in the air, or worse, in the water.

The disappearance of Air France Flight 477 and its 228 passengers over the Atlantic Ocean this week has critics of radar-based air traffic control calling on the U.S. and other countries to hasten the move to GPS-based networks that promise to precisely track all planes. Current radars are obsolete more than 200 miles from land.

"The technology's there -- we've had this stuff for 15 years and little's happened," said Michael Boyd, a Colorado-based airline analyst. "My BlackBerry can be used to track me, so why can't we do it with planes?"

U.S. officials have discussed setting up such a network since the 1990s and the technology is being tested in parts of the country, including Alaska and off the Gulf Coast. A few carriers, like Southwest, already use GPS to help planes make quicker landings that burn less fuel.

But full implementation, estimated at a cost of $35 billion, has languished amid funding delays and disputes over technical complexities. Although Transportation Secretary Ray LaHood has said the project will be among the Federal Aviation Administration's top priorities in the Obama administration, the existing radar system is likely to remain for at least another decade.

"It's a crude system they're using now," said Robert Poole, an aviation expert with the free market-oriented Reason Foundation. "For 100 dollars, you can run down and buy a GPS system, put it in your car and know exactly where you are. But planes don't have it."
Read Article...
http://finance.yahoo.com/news/Common-GPS-could-help-better-apf-15434824.html?sec=topStories&pos=3&asset=&ccode=
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