Incidents Moteurs présumés

An Air One [Vous devez être inscrit et connecté pour voir ce lien] A330-200, EI-DIP, operating as AZ615 from Boston, BOS to Rome, FCO was forced to return to Boston after a fire developed on no.2 engine.
The aircraft made an emergency landing and safely stopped.

The aircraft, MSN339, first flew on 15/05/2000 and was delivered to its first owner Canada 3000 Airlines on 26/05/2000. The aircraft is fitted with GE CF6 engines.

...the crew declared PAN reporting multiple technical problems increasing in number and severity, the crew being unable to pinpoint any specific issues.

At the same time the crew reported being low on fuel having about 40 minutes endurance left.

The crew requested a long final to be able to configure the airplane early...

SIOUX FALLS, S.D.—A mechanical problem forced a United flight bound for Chicago to land at Sioux Falls Regional Airport.

United Flight 158 from San Francisco landed without incident around 4 a.m. Monday. No injuries werereported.

Passenger Claire Carmichael told station KDLT that fire was coming out of the left engine of the jet, a Boeing 757.

United spokesman Mike Trevino says the pilot decided to divert to Sioux Falls because of a mechanical problem.

Trevino says he had no information about any flames from an engine. Trevino says 182 passengers were aboard, but he didn't know how many were in the flight crew. He says a replacement aircraft was sent to Sioux Falls to take the
passengers on to Chicago.

The Australian Transport Safety Bureau (ATSB) has warned operators of CFM International [Vous devez être inscrit et connecté pour voir ce lien]-5 and CFM56-7 engines to be aware of premature wear that may precipitate engine failure.

The bureau wishes to "draw the attention of all operators of CFM56-7 and CFM56-5 engines and their variants to the safety issues identified by this investigation," says the ATSB in its safety advisory notice.
"In particular, operators should be aware of the potential for premature wear within the compressor variable stator vane bushings and shroud to develop to levels where it may precipitate the failure of the engine while in service, and within a time-frame that is less than the minimum threshold for the initial inspection for the problem."

"Operators are encouraged to review their procedures to ensure an appropriate awareness of the issues among maintenance personnel," it adds.
The CFM56 is found on [Vous devez être inscrit et connecté pour voir ce lien] A320s and [Vous devez être inscrit et connecté pour voir ce lien] 737s.
The ATSB launched its investigation after a 20 August 2009 incident in which a [Vous devez être inscrit et connecté pour voir ce lien]-800, local registration VH-VOC, had to return to Launceston Airport because a compressor surge and damage to the left engine.

"The compressor surge and damage to the left engine was the result of advanced variable stator vane bushing/shroud wear, which caused a seal retainer to dislodge from the inner shroud segment and move into the compressor gas path," says the ATSB.

"The liberated seal segments then progressed downstream, causing significant damage to the remaining stages, resulting in loss of compressor efficiency," it says.

The ATSB says the engine manufacturer has responded by issuing a number of service bulletins to operators highlighting the need for on-wing borescope inspection to look for inner shroud and j-hook wear.
It also introduced new part numbers that appear to eliminate the cause Of the compressor surge, says the bureau.
As a consequence, the ATSB considers that the safety action, taken by CFM International, adequately addresses this safety issue, it adds.

Dubai: Shortly after take off on Friday from Durban's King Shaka International Airport, Emirates flight EK776 experienced a technical issue which resulted in the aircraft, an Airbus A330-200, returning to Durban, an Emirates spokesperson said.


Reports said that the flight's pilot had to shut down the right hand engine after noticing low oil pressure.

"All of the passengers were accommodated in a hotel while a recovery aircraft was dispatched to Durban," Emirates said.

The flight finally reached Dubai on Sunday, with a total delay of 27.5 hours.

Sevrien a écrit:A noter ! La date "le 22 juillet, 2010" (même en français) !

The Engine Alliance GP7200 engine is in the middle of a weight-reduction program that may further help sales as the General Electric-Pratt & Whitney joint venture is engaged in at least three campaigns: with Qatar Airways, Kingfisher Airlines and Vietnam Airlines. The engine maker (Hall 4 Stand A10) expects 19 Airbus A380s to be in service flying its turbofans by the end of the year.

According to Engine Alliance president Mary Ellen Jones, the GP7200 has lost 150 pounds since entry into service two years ago. “We were a bit above spec,” she said. An additional 50 pounds are to be saved on engines delivered at some point next year, which will be about 100 pounds better than specified, thanks to a new turbine exhaust case.

The new component is being evaluated on an engine being used for endurance trials. To “keep ahead of any issue,” Engine Alliance engineers have conducted this maturation program in an MTU test cell, where a GP7200 has already logged 3,000 cycles at 77,000 pounds of thrust. Analytic teardown is in progress.

Fuel burn has been improved, too, Jones reported. In April, Airbus revised the A380 performance handbook to reflect 0.5-percent lower specific fuel consumption. “We are thus 1.5-percent better than our [Rolls-Royce Trent 900] competitor,” she said.

So far, fleet statistics look good, with zero in-flight shut downs in more than 200,000 flight hours.

• démontrer la non-déclaration,
  
• souligner la superficialité des "Journaleux", et
  
• montrer comment on véhicule de la désinformation, sur base d'idées reçues (aah ; si Flaubert était là ! ).
  

LysanD a écrit:20 heures d'attente.

C'est un autre A 380 ( A6-EDH ) qui a remplacé celui qui a eu un arrêt en vol. ( A6-EDG )

A Monarch flight had to turn back on Tuesday night after eyewitnesses saw flames coming from one of its engines. The Airbus A321 took off from Birmingham on its way to Tenerife at 6.45pm but returned to the airport 10 minutes later. All 213 passengers disembarked safely. Onlookers claimed to see flames coming from the engines, but Monarch said engineers found no signs of a fire.

IN BRIEF: Monarch flight turns back after report of fire
TTG, Travel Trade Gazette, U.K. and Ireland, Arrival Time: 2010-08-09

A
Monarch flight had to turn back on Tuesday night after eyewitnesses saw
flames coming from one of its engines. The Airbus A321 took off from
Birmingham on its way to Tenerife at 6.45pm but returned to the airport
10 minutes later. All 213 passengers disembarked safely. Onlookers
claimed to see flames coming from the engines, but Monarch said
engineers found no signs of a fire.

Bizarre !

Moteur IAE V2500 ?

Non-incident , non-événement, .... ou à suivre ?

[Vous devez être inscrit et connecté pour voir ce lien] has disclosed that its second [Vous devez être inscrit et connecté pour voir ce lien] has undergone an in-flight engine shutdown just a couple of days after entering into service.
The aircraft, powered by [Vous devez être inscrit et connecté pour voir ce lien] engines, was delivered on 19 July and put into service last week on the Frankfurt-Tokyo route.
Lufthansa says that the aircraft was flying the return sector on 6 August when, about an hour before landing at Frankfurt, the crew took a "precautionary" decision to shut the engine down.

A spokesman for the airline says the decision followed the generation of "confusing numbers" on a cockpit indicator.
The indicator showed that the problem centred on oil pressure. Lufthansa's main A380 maintenance base is located at Frankfurt, and the aircraft - serial number 41 - underwent an engine change in order to return it to service as quickly as possible.

Inspection revealed "substances" in the filter but Lufthansa has not given further details. The company had a spare engine available and the aircraft went back into service on 7 August.

Both of the carrier's A380s are operating the Tokyo Narita route, providing a daily service to the Japanese capital from Frankfurt.

[Vous devez être inscrit et connecté pour voir ce lien] has disclosed that its second [Vous devez être inscrit et connecté pour voir ce lien] has undergone an in-flight engine shutdown just a couple of days after entering into service.

The aircraft, powered by [Vous devez être inscrit et connecté pour voir ce lien] engines, was delivered on 19 July and put into service last week on the Frankfurt-Tokyo route.

Lufthansa says that the aircraft was flying the return sector on 6 August when, about an hour before landing at Frankfurt, the crew took a "precautionary" decision to shut the engine down.
A spokesman for the airline says the decision followed the generation of "confusing numbers" on a cockpit indicator.

The indicator showed that the problem centred on oil pressure.

Lufthansa's main A380 maintenance base is located at Frankfurt, and the aircraft - serial number 41 - underwent an engine change in order to return it to service as quickly as possible.

Inspection revealed "substances" in the filter but Lufthansa has not given further details.

The company had a spare engine available and the aircraft went back into service on 7 August.

Both of the carrier's A380s are operating the Tokyo Narita route, providing a daily service to the Japanese capital from Frankfurt.

Fuel contamination, causing the seizure of engine valves, has been identified as the prime suspect after a Cathay Pacific Airbus A330-300 suffered a double powerplant malfunction on approach to Hong Kong four months ago.

The aircraft, operating flight CX780, landed at high speed on 13 April after its left-hand Rolls-Royce Trent 700 engine jammed at a high thrust setting while the right-hand engine remained at low thrust. No evidence has emerged of spurious command signals from the engine controls.

But investigators discovered fine spherical particles - the nature of which is still being determined - inside the fuel tanks, fuel system and several engine components, including the fuel metering units and stator vane controls.
Examination of the engine fuel components showed that both engines' main metering valves had jammed in positions consistent with the thrust levels experienced on the approach.

"The abnormal engines performance during the flight was believed to have been caused by stiction, and eventual seizure, of the valves," says the Hong Kong Civil Aviation Department.
It states that the spherical particles could not have been generated by the aircraft or its engine systems.

While the inquiry has yet to reach any conclusions, suspicion has fallen on the uplifting of 24.4t of fuel to the A330 while it was parked at Surabaya's Juanda International Airport.
The hydrant refuelling circuit serving 10 stands at the airport had undergone extension work as part of an apron extension project.
"Subsequent investigation at [Juanda Airport] noted that some of the re-commissioning procedures of that hydrant extension work were not in line/ with the guidelines and practices commonly used by the aviation fuel industry," says the Civil Aviation Department.

It adds that the refuelling system for several stands, including that used by the A330, was used before these re-commissioning procedures were completed. After the CX780 landing incident the refuelling circuit was isolated.
Although the inquiry is continuing, the Civil Aviation Department is recommending that Juanda Airport's authorities review the procedures and ensure they are completed before the refuelling system is brought back into operation.

• reconnaître que le but principal dans ses opérations d'enquête et d'implémentation de recommandations et de mesures / solutions, est d'améliorer durablement la sécurité aérienne (et non pas de dénigrer de manière fausse, puérile et stérile le produit d'un constructeur, en cherchant à marquer des points de boy-scout contre ledit constructeur) ;
  
• 
  
• distinguer entre les "root causes" recherchées (permettant d'appliquer les solutions radicales, destinées à guérir ''définitivement' le problème à la racine), et les symptômes et autres aspects périphériques, connexes mais subsidiaires (qui permettent, certes, d'introduire des mesures conservatoires, qui éloignent, ou réduisent substantiellement et acceptablement le risque, sans pour autant pouvoir garantir de le neutraliser totalement, ou de l'éliminer) ;
  
• 
  
• privilégier les faits et non pas leurs théories et hypothèses personnelles.
  

The Trent 700-powered aircraft touched down at a groundspeed of 230kt with the left-hand engine stuck at a high-thrust setting of approximately 70 per cent N1 and the right-hand engine stuck at around 17 per cent N1.

Passengers and crew safely evacuated the aircraft via the escape slides after rescue services reported fire around the landing gear; five tyres were deflated by the landing.

The investigators found "fine spherical particles" in the aircraft’s fuel system, which seized the main metering
valves of both engines.

These spheres have been traced back to the fuel distribution system at Juanda International Airport in Surabaya, Indonesia, from where the aircraft had departed. The fuel hydrant, from which the twinjet took on 24,400kg of fuel, was on a circuit that had recently been extended.

The CAD says that when the system was taken back into operation, "some of the re-commissioning procedures…were not in line with the guidelines and practices commonly used by the aviation industry, and that the hydrant fuel system… was used before the completion of the re-commissioning procedures".

Cathay said that no abnormalities have been observed by itself or other airlines operating flights out of Surabaya.

The CAD emphasised the investigation still continues and that a final report is later to be published.