No ma una multinazionale tende a chiudere immediatamente tutti i rumors che possono nuocere l'immagine dei propri prodotti, specie quando poi non sono fondati.
Crepe trovate su diversi A380 di Singapore e Qantas!
- Autore Discussione dreamliner
- Data d'inizio
No ma una multinazionale tende a chiudere immediatamente tutti i rumors che possono nuocere l'immagine dei propri prodotti, specie quando poi non sono fondati.
Vedo che come sempre non ti fai problemi a fare i soliti monologhi, senza cogliere tra l'altro l'ironia del mio post. So che tipo di testata è dailymail e il suo grado di autorevolezza dunque zero sorprese..
In realtà, pur avendoti quotato, non mi riferivo specificatamente al tuo post. Il "monologo" era più generale e si riferiva anche a passaggi che non hai discusso tu ma altri.
...non sia qualcosa di più grave del previsto.
Senza guardare la mia firma (ironica) ovviamente mi auguro che non sia nulla di tutto ciò.
Ha ragione Flyice nel sottolineare che nessuna authority si sia mossa al riguardo, però non è trascurabile considerare che se due indizi fanno una prova, più crepe su più aerei portano quantomeno a pensare a una differente efficienza delle parti rispetto a quanto progettato il che potrebbe portare modifiche agli aerei esistenti e a quelli che arriveranno.
Aspettiamo fiduciosi ulteriori sviluppi ufficiali, sino ad allora si parlerà sempre e solo di aria fritta.
Airbus traces A380 wing cracks to manufacturing process
By: David Kaminski-Morrow London 3 hours ago
Source: Pro
Airbus has traced the source of the cracking in A380 wing structures to unexpected additional stresses imparted by the manufacturing process, and is confident that its original flight loading calculations for the type are accurate.
The airframer is in the process of changing the manufacturing process and has developed a fix for affected aircraft, as the European Aviation Safety Agency prepares to instruct operators to conduct precautionary inspections.
But Airbus emphasises that the cracking problem - while needing to be addressed, to avoid longer-term issues - is not a safety risk in the short- to medium-term.
The cracks were originally discovered in the rib feet of the Qantas A380 which suffered an uncontained engine failure in November 2010, and has since been under repair in Singapore.
Airbus carries out A380 wing manufacture at the UK plant in Broughton, before transferring the wings to the Toulouse final assembly line. An Airbus wing specialist on the A380 said the airframer's investigations indicated that parts were being stressed at some point during the manufacturing process, which involves drawing the wing skin over the built-up rib and spar assembly before attaching it.
"It's possible to get standing stresses that hadn't been expected," said the specialist, which translated into additional loading during flight. Airbus has already conducted verification flights to measure actual loading, and found that its original design calculations are correct.
"We've confirmed that ordinary flight loads are exactly as predicted," the specialist said, and added that the components' design would remain "completely unchanged". But the airframer said it was changing the build process, to ensure that wing assembly does not generate unforeseen stresses.
Rib feet are L-shaped brackets, about 9in (23cm) tall, which connect the wing skin to composite rib structures. There are some 30-40 on each rib spanning the wing.
While the Qantas aircraft sustained extensive wing damage during the engine failure, engineers carried out an intensive inspection to establish whether there was evidence of damage which could not be attributed to the event.
This inspection revealed faint hairline cracks in the area where the rib foot is attached to the wing skin, running from the bolt-hole to the edge of the foot. He said a "few" of these feet were affected, located about halfway along the span of the wing.
The Qantas aircraft is one of the early airframes, MSN14, and the finding prompted precautionary checks on other initial-production A380s.
Nine aircraft have been inspected. Checks on another A380, during a 2C maintenance visit earlier this month, found cracks on a rib foot, in a different position. An immediate remedial solution involves replacing the affected rib feet and dropping a new section into its place.
While Airbus insists that the cracks are "nothing of concern", and would only need to be addressed over a period of years rather than urgently, it expects EASA to release an airworthiness directive instructing operators to carry out inspections - although the precise extent of these has yet to be disclosed.
"In the long term it would have to be fixed, but in the short term it's not a problem," the specialist pointed out.
Airbus said it is confident that the crack problems, originally only noticed as a consequence of the Qantas repair, would easily have been detected during a later heavy check, even if it had not been identified during earlier routine maintenance.
http://www.flightglobal.com/news/ar...-wing-cracks-to-manufacturing-process-367116/
By: David Kaminski-Morrow London 3 hours ago
Source: Pro
Airbus has traced the source of the cracking in A380 wing structures to unexpected additional stresses imparted by the manufacturing process, and is confident that its original flight loading calculations for the type are accurate.
The airframer is in the process of changing the manufacturing process and has developed a fix for affected aircraft, as the European Aviation Safety Agency prepares to instruct operators to conduct precautionary inspections.
But Airbus emphasises that the cracking problem - while needing to be addressed, to avoid longer-term issues - is not a safety risk in the short- to medium-term.
The cracks were originally discovered in the rib feet of the Qantas A380 which suffered an uncontained engine failure in November 2010, and has since been under repair in Singapore.
Airbus carries out A380 wing manufacture at the UK plant in Broughton, before transferring the wings to the Toulouse final assembly line. An Airbus wing specialist on the A380 said the airframer's investigations indicated that parts were being stressed at some point during the manufacturing process, which involves drawing the wing skin over the built-up rib and spar assembly before attaching it.
"It's possible to get standing stresses that hadn't been expected," said the specialist, which translated into additional loading during flight. Airbus has already conducted verification flights to measure actual loading, and found that its original design calculations are correct.
"We've confirmed that ordinary flight loads are exactly as predicted," the specialist said, and added that the components' design would remain "completely unchanged". But the airframer said it was changing the build process, to ensure that wing assembly does not generate unforeseen stresses.
Rib feet are L-shaped brackets, about 9in (23cm) tall, which connect the wing skin to composite rib structures. There are some 30-40 on each rib spanning the wing.
While the Qantas aircraft sustained extensive wing damage during the engine failure, engineers carried out an intensive inspection to establish whether there was evidence of damage which could not be attributed to the event.
This inspection revealed faint hairline cracks in the area where the rib foot is attached to the wing skin, running from the bolt-hole to the edge of the foot. He said a "few" of these feet were affected, located about halfway along the span of the wing.
The Qantas aircraft is one of the early airframes, MSN14, and the finding prompted precautionary checks on other initial-production A380s.
Nine aircraft have been inspected. Checks on another A380, during a 2C maintenance visit earlier this month, found cracks on a rib foot, in a different position. An immediate remedial solution involves replacing the affected rib feet and dropping a new section into its place.
While Airbus insists that the cracks are "nothing of concern", and would only need to be addressed over a period of years rather than urgently, it expects EASA to release an airworthiness directive instructing operators to carry out inspections - although the precise extent of these has yet to be disclosed.
"In the long term it would have to be fixed, but in the short term it's not a problem," the specialist pointed out.
Airbus said it is confident that the crack problems, originally only noticed as a consequence of the Qantas repair, would easily have been detected during a later heavy check, even if it had not been identified during earlier routine maintenance.
http://www.flightglobal.com/news/ar...-wing-cracks-to-manufacturing-process-367116/
Più che di "crepe" bisognerebbe parlare di "cricche", che è il corretto termine tecnico italiano.
La presenza di micro-cricche in aeronautica è talvolta accettato dalle normative CS, FAR e JAR, purchè di dimostri che la sua velocità di propagazione è così bassa da rendere possibile l'intervento di riparazione ben prima che le stesse possano divenire un problema per la sicurezza.
Ciao
La presenza di micro-cricche in aeronautica è talvolta accettato dalle normative CS, FAR e JAR, purchè di dimostri che la sua velocità di propagazione è così bassa da rendere possibile l'intervento di riparazione ben prima che le stesse possano divenire un problema per la sicurezza.
Ciao
Dopo la figuraccia della mano tesa al nulla che Cameron si beccò da Sarkò, questo Eva 3000 d'oltre manica non perde occasione per massacrare qualsiasi cosa di provenienza francese. Finirà come dieci anni fa, dopo il veto di Chirac sull'invasione in Iraq, con i "falchi" americani che ribattezzarono le french fries "freedom fries"?
Airbus A380, scoperte microfessure nelle ali
Dal Corriere.it di ieri:
"La scoperta emersa dalle periodiche manutenzioni. È la seconda volta che si trovano micro-cedimenti"
http://www.corriere.it/cronache/12_...ra_920e7f66-42db-11e1-8207-8bde7a1445db.shtml
...per me qualche "giornalista-iena" ha già preparato, e tiene pronto nel cassetto, qualche bel "coccodrillo"!?!
Dal Corriere.it di ieri:
"La scoperta emersa dalle periodiche manutenzioni. È la seconda volta che si trovano micro-cedimenti"
http://www.corriere.it/cronache/12_...ra_920e7f66-42db-11e1-8207-8bde7a1445db.shtml
...per me qualche "giornalista-iena" ha già preparato, e tiene pronto nel cassetto, qualche bel "coccodrillo"!?!
Emanata oggi Airworthiness Directive da Easa (AD No.: 2012-0013 Date: 20 January 2012) scaricabile da http://ad.easa.europa.eu/
Richiesta ispezione entro 4 giorni o 14 cicli per aerei con > 1800 cicli di volo / 6 settimane od 84 cicli per aerei con 1300 - 1799 cicli di volo; contattare Airbus per istruzioni se trovate lesioni.
Richiesta ispezione entro 4 giorni o 14 cicli per aerei con > 1800 cicli di volo / 6 settimane od 84 cicli per aerei con 1300 - 1799 cicli di volo; contattare Airbus per istruzioni se trovate lesioni.
More cracks found on SIA's A380 planes
AFP | Tue, Jan 31 2012
FRANKFURT - Singapore Airlines said on Monday it had found examples of recently identified wing cracks in all six of the Airbus A380s on which it carried out mandatory inspections, as a senior pilot issued reassurance over the superjumbo's safety.
The discovery of more instances of cracked wing components was expected after Airbus said last week it had found the problem and predicted that until it had time to conduct repairs, a consistent pattern would emerge in further tests.
The European planemaker and airlines insist the world's largest airliner is safe to fly, but are keen to move beyond the issue of small cracks in wing brackets that grabbed media attention and triggered compulsory checks last week.
The European Aviation Safety Agency ordered carriers to inspect almost a third of the global fleet of A380s, starting with six jets operated by Singapore Airlines, to check for one of two types of cracks that emerged in the space of weeks. [TABLE="width: 160, align: right"]
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"We found cracks in all six," the airline's regional public relations manager for Europe, Peter Tomasch, said during a press event at Frankfurt Airport.
"Four we have repaired and they are flying again. The other two will follow in the coming days."
EASA ordered the most urgent checks on aircraft that had carried out at least 1,800 takeoffs and landings; the six Singapore Airlines aircraft fell into this category.
The agency gave airlines six weeks to perform checks on a second category of jets that had between 1,300 and 1,800 takeoffs and landings, and did not order checks on less heavily used aircraft.
Boeing unlikely to benefit
Analysts say publicity over the cracks is unlikely to benefit Airbus rival Boeing in the short term as airlines base their decisions on whether to buy the $390 million (S$489.3 million) jet on the economics of its anticipated performance over many years.
However, some say the problems for Airbus and parent EADS could deepen if the response diverts scarce engineering resources or passengers balk at flying on the jet. So far no airlines operating the A380 have reported any dip in bookings.
In a bulletin known as an airworthiness directive, EASA last week gave Singapore Airlines, Dubai's Emirates and Air France six weeks to examine a further 14 aircraft.
In total, 68 superjumbos are in operation and a total of 253 have been sold.
Airbus says the cracks were discovered long before they posed a potential safety hazard, but it faces a bill for the checks and repairs which are being carried out at its expense.
"The inspection and repairs are well under way and continuing, in line with the airworthiness directive," a spokeswoman said.
"Airbus is supplying repair kits as well as providing technical and logistical support to our customers".
Cracks blamed on three errors
Cracks on what Airbus describes as a handful of the 2,000 L-shaped brackets fixing exterior panels to the ribcage of each 9,100-square-foot wing first surfaced during repairs to a Qantas A380 that was damaged when an engine exploded in November 2010.
Those initial cracks were seen as a minor glitch in the aircraft's metallic frame, but regulators decided to act when their discovery led engineers to a second and potentially more significant type of crack on the same type of bracket.
Airbus said last week that having understood the problem, it expected most of the aircraft being tested would show similar evidence of cracks and that it had found a simple repair.
It blamed the cracks on three errors: designers' choice of aluminium alloy for some of the "rib feet" brackets, the use of a type of bolt that strained the metal and a way of closing tiny gaps that put too much stress on a handful of parts.
Besides the 24 hours required to empty fuel tanks and carry out visual inspections inside the UK-built wings, the largest ever made for a jetliner, no A380s have been grounded.
However, if unrepaired, the cracks could curtail the maximum service life allowed by regulators. After immediate repairs, Airbus plans to change the type of metal used to build the part.
Pilot reassurance
Singapore Airlines' chief pilot for the A380, Captain Robert Ting, flew to Germany on Sunday in one of the six aircraft that had to be fixed as a result of mandatory inspections so far and sought to reassure future passengers over the aircraft's safety.
"I slept very well," he said, referring to his peace of mind during a rest period while a second crew flew the aircraft.
"We have very competent authorities, and a very competent Airbus," he told reporters in Frankfurt.
Ting piloted the first commercial A380 flight in 2007.
http://www.relax.com.sg/relax/news/927426/More_cracks_found_on_SIA_s_A380_planes.html
AFP | Tue, Jan 31 2012
FRANKFURT - Singapore Airlines said on Monday it had found examples of recently identified wing cracks in all six of the Airbus A380s on which it carried out mandatory inspections, as a senior pilot issued reassurance over the superjumbo's safety.
The discovery of more instances of cracked wing components was expected after Airbus said last week it had found the problem and predicted that until it had time to conduct repairs, a consistent pattern would emerge in further tests.
The European planemaker and airlines insist the world's largest airliner is safe to fly, but are keen to move beyond the issue of small cracks in wing brackets that grabbed media attention and triggered compulsory checks last week.
The European Aviation Safety Agency ordered carriers to inspect almost a third of the global fleet of A380s, starting with six jets operated by Singapore Airlines, to check for one of two types of cracks that emerged in the space of weeks. [TABLE="width: 160, align: right"]
[TR]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
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[/TABLE]
"We found cracks in all six," the airline's regional public relations manager for Europe, Peter Tomasch, said during a press event at Frankfurt Airport.
"Four we have repaired and they are flying again. The other two will follow in the coming days."
EASA ordered the most urgent checks on aircraft that had carried out at least 1,800 takeoffs and landings; the six Singapore Airlines aircraft fell into this category.
The agency gave airlines six weeks to perform checks on a second category of jets that had between 1,300 and 1,800 takeoffs and landings, and did not order checks on less heavily used aircraft.
Boeing unlikely to benefit
Analysts say publicity over the cracks is unlikely to benefit Airbus rival Boeing in the short term as airlines base their decisions on whether to buy the $390 million (S$489.3 million) jet on the economics of its anticipated performance over many years.
However, some say the problems for Airbus and parent EADS could deepen if the response diverts scarce engineering resources or passengers balk at flying on the jet. So far no airlines operating the A380 have reported any dip in bookings.
In a bulletin known as an airworthiness directive, EASA last week gave Singapore Airlines, Dubai's Emirates and Air France six weeks to examine a further 14 aircraft.
In total, 68 superjumbos are in operation and a total of 253 have been sold.
Airbus says the cracks were discovered long before they posed a potential safety hazard, but it faces a bill for the checks and repairs which are being carried out at its expense.
"The inspection and repairs are well under way and continuing, in line with the airworthiness directive," a spokeswoman said.
"Airbus is supplying repair kits as well as providing technical and logistical support to our customers".
Cracks blamed on three errors
Cracks on what Airbus describes as a handful of the 2,000 L-shaped brackets fixing exterior panels to the ribcage of each 9,100-square-foot wing first surfaced during repairs to a Qantas A380 that was damaged when an engine exploded in November 2010.
Those initial cracks were seen as a minor glitch in the aircraft's metallic frame, but regulators decided to act when their discovery led engineers to a second and potentially more significant type of crack on the same type of bracket.
Airbus said last week that having understood the problem, it expected most of the aircraft being tested would show similar evidence of cracks and that it had found a simple repair.
It blamed the cracks on three errors: designers' choice of aluminium alloy for some of the "rib feet" brackets, the use of a type of bolt that strained the metal and a way of closing tiny gaps that put too much stress on a handful of parts.
Besides the 24 hours required to empty fuel tanks and carry out visual inspections inside the UK-built wings, the largest ever made for a jetliner, no A380s have been grounded.
However, if unrepaired, the cracks could curtail the maximum service life allowed by regulators. After immediate repairs, Airbus plans to change the type of metal used to build the part.
Pilot reassurance
Singapore Airlines' chief pilot for the A380, Captain Robert Ting, flew to Germany on Sunday in one of the six aircraft that had to be fixed as a result of mandatory inspections so far and sought to reassure future passengers over the aircraft's safety.
"I slept very well," he said, referring to his peace of mind during a rest period while a second crew flew the aircraft.
"We have very competent authorities, and a very competent Airbus," he told reporters in Frankfurt.
Ting piloted the first commercial A380 flight in 2007.
http://www.relax.com.sg/relax/news/927426/More_cracks_found_on_SIA_s_A380_planes.html
La situazione non accenna a migliorare. Sarebbe interessante sapere se anche altri aerei hanno questo tipo di problemi, magari risolti silenziosamente, oppure se siamo di fronte ad un fenomeno nuovo.
Qantas grounds A380 after finding 36 cracks on wings
A Qantas Airways Airbus A380 has been grounded after 36 cracks were found on its wings on 5 February.
The aircraft, which bears the registration VH-OQF, had its airframe built in 2010 and has clocked 399 flight cycles totalling 2,454 flight hours, according to Flightglobal's ACAS database.
The aircraft was first grounded when Airbus requested a second phase of precautionary checks on its wings after it went through severe turbulence in January, said Qantas. Airbus made the request after reviewing data of the turbulent flight.
"During these inspections, minor cracking was found on some wing rib brackets. This cracking is not related to the turbulence, or specific to Qantas, but is traced back to a manufacturing issue in this specific wing area of the aircraft," said a Qantas spokesman.
He added that the cracks found are different from the "type two" cracking recently found on other A380s, which are now the subject of a European airworthiness directive.
The cracks are, however, similar to the manufacturing defects discovered earlier on the wing ribs of a Qantas A380 that suffered an uncontained engine failure near Singapore in November 2010, he said. That aircraft is still in Singapore, where it made an emergency landing after the incident, but the cracks have since been repaired.
Qantas is now working with Airbus on the cracks and an "inspection and repair regime" is being developed.
"We will follow Airbus' instructions on any further action that may be required. However we expect the aircraft to be back in service within a week," said the spokesman, adding that Airbus has confirmed that the cracks have no effect on flight safety.
The European Aviation Safety Agency ordered the inspection of 20 Airbus A380s to check for wing rib-foot damage in January after two different forms of cracks were found in the structure of the aircraft. Of the affected aircraft, 10 are with Singapore Airlines, seven with Emirates, one with Air France and two are Airbus test A380s.
http://www.flightglobal.com/news/ar...a380-after-finding-36-cracks-on-wings-367923/
Qantas grounds A380 after finding 36 cracks on wings
A Qantas Airways Airbus A380 has been grounded after 36 cracks were found on its wings on 5 February.
The aircraft, which bears the registration VH-OQF, had its airframe built in 2010 and has clocked 399 flight cycles totalling 2,454 flight hours, according to Flightglobal's ACAS database.
The aircraft was first grounded when Airbus requested a second phase of precautionary checks on its wings after it went through severe turbulence in January, said Qantas. Airbus made the request after reviewing data of the turbulent flight.
"During these inspections, minor cracking was found on some wing rib brackets. This cracking is not related to the turbulence, or specific to Qantas, but is traced back to a manufacturing issue in this specific wing area of the aircraft," said a Qantas spokesman.
He added that the cracks found are different from the "type two" cracking recently found on other A380s, which are now the subject of a European airworthiness directive.
The cracks are, however, similar to the manufacturing defects discovered earlier on the wing ribs of a Qantas A380 that suffered an uncontained engine failure near Singapore in November 2010, he said. That aircraft is still in Singapore, where it made an emergency landing after the incident, but the cracks have since been repaired.
Qantas is now working with Airbus on the cracks and an "inspection and repair regime" is being developed.
"We will follow Airbus' instructions on any further action that may be required. However we expect the aircraft to be back in service within a week," said the spokesman, adding that Airbus has confirmed that the cracks have no effect on flight safety.
The European Aviation Safety Agency ordered the inspection of 20 Airbus A380s to check for wing rib-foot damage in January after two different forms of cracks were found in the structure of the aircraft. Of the affected aircraft, 10 are with Singapore Airlines, seven with Emirates, one with Air France and two are Airbus test A380s.
http://www.flightglobal.com/news/ar...a380-after-finding-36-cracks-on-wings-367923/
SkyNewsBreak Sky News Newsdesk
AFP: All Airbus A380 jets will be checked for cracks in their wings
AFP: All Airbus A380 jets will be checked for cracks in their wings
notizia di adesso di Sky ore 10.45 : Airbus chiede ispezione alle ali di tutti i 380 in servizio
Dal Corriere.it di oggi
http://www.corriere.it/scienze_e_te...ni_4818bdae-523a-11e1-9430-803241dfdaad.shtml
http://www.corriere.it/scienze_e_te...ni_4818bdae-523a-11e1-9430-803241dfdaad.shtml
E intanto il titolo eads perde in borsa... non molto (poco più dell 1)... mi aspettavo peggio sinceramente, e credo che se scende un pochino di più convenga iniziare a comprare, sono sicuro che airbus riporta su il titolo senza troppe difficoltà !