Incidents Moteurs présumés

A United Airlines Boeing 757-200, registration N541UA performing flight UA-321 from Denver,CO to Los Angeles,CA (USA) with 125 people on board, was enroute at FL400 about 40nm southwest of Grand Junction,CO when the crew needed to shut the right hand engine (PW2037) down due to loss of engine oil. The crew diverted to Grand Junction Regional Airport for a safe landing about 30 minutes.

A replacement Boeing 757-200 has been dispatched from Denver to Grand Junction as flight UA-9941.

A PIA Pakistan International Airlines Boeing 747-300, registration AP-BFW performing Hajj flight PK-2362 from Jeddah (Saudi Arabia) to Lahore (Pakistan), was on approach to Lahore about 50nm before touchdown when the crew reported a #3 engine (RB211) failure and shut the engine down. The aircraft continued for a safe landing at Lahore.

A postflight inspection of the engine revealed metallic particles in the magnetic chip detector as result of a failed bearing.

The aircraft is going to be ferried to Karachi on three engines on Dec 12th, engine #3 will be replaced in Karachi.

A Lufthansa Airbus A320-200, registration D-AIQE performing flight LH-1446 from Frankfurt/Main (Germany) to Moscow Domodedovo (Russia) with 115 passengers, was on approach to Moscow descending through about 10,000 feet when the crew needed to shut the left hand engine (CFM56) down. The aircraft continued for a safe landing on Domodedovo's runway 14R about 12 minutes later at 17:20L (13:20Z).

Russia's Rosaviatsia (Civil Aviation Authority) reported the aircraft arrived from Dusseldorf (with no aircraft from Dusseldorf due anywhere near that time), radar data however confirm the crew of flight LH-1446 squawked emergency. The right hand engine was shut down.

The airline reported the left hand engine was shut down.

An Air France Boeing 777-200, registration F-GSPV performing flight AF-459 (dep Dec 28th) from Sao Paulo Guarulhos,SP (Brazil) to Paris Charles de Gaulle (France), was enroute at or above FL350 over the Atlantic Ocean about 90 minutes into the Atlantic crossing when the crew descended the aircraft to FL200 due to some technical problem, turned around and returned to Sao Paulo for a safe landing on Guarulhos' runway 09R about 9 hours after departure and about 5 hours after turning around.

The aircraft was able to depart Sao Paulo again on Dec 30th and is estimated to reach Paris with a delay of 35 hours.

The airline confirmed technical problems as cause for the return.

An Aeroflot Airbus A319-100, registration VP-BWK performing flight SU-714 from Nizhniy Novgorod to Moscow Sheremetyevo (Russia) with 76 people on board, was on approach to Sheremetyevo Airport maintaining FL180 when the crew needed to shut the right hand engine (CFM56) down. The crew continued for a safe landing on Sheremetyevo's runway 25R about 15 minutes later.

An American Airlines Boeing 757-200, registration N637AM performing flight AA-432 from Miami,FL to Dallas Ft. Worth,TX (USA) with 195 people on board, was enroute at FL400 about 30nm eastsoutheast of New Orleans,LA when the crew reported they needed to shut the left hand engine (RB211) down, fuel remaining 2 hours 30 minutes, and diverted to New Orleans for a safe landing on runway 28 about 30 minutes later.

A replacement Boeing 757-200 reached Dallas with a delay of 6:15 hours.

An American Airlines Boeing 737-800, registration N971AN performing flight AA-1210 from Chicago O'Hare,IL to Boston,MA (USA) with 124 passengers and 6 crew, was enroute at FL370 about 120nm west of Albany,NY (USA) when the crew shut the left hand engine (CFM56) down due to the loss of oil pressure and diverted to Albany for a safe landing on Albany's runway 19 about 25 minutes later and taxied to the gate with crew requesting emergency services to follow the aircraft.

A replacement MD-83 reached Boston with a delay of 4.5 hours.

A China Eastern Boeing 737-700, registration B-5031 performing flight MU-5682 from Xiamen to Shanghai Hongqiao (China) with 112 passengers, was climbing out of Xiamen when the aircraft experienced severe vibrations. The crew shut the right hand engine down and returned to Xiamen for a safe landing about 20 minutes after departure.

Passengers reported that the airframe began to seriously vibrate and the right hand engine emitted sparks until the right hand engine was shut down.

A Brussels Airlines Airbus A330-300, registration OO-SFM performing flight SN-224 (dep Jan 17th) from Banjul (Gambia) to Brussels (Belgium) with 240 passengers, was climbing out of Banjul when the crew decided to divert to Dakar (Senegal) located about 90nm north of Banjul due to problems with an engine (CF6). The aircraft landed safely in Dakar.

The passengers were taken to hotels. A replacement aircraft has been dispatched to Dakar.

A TAM Linhas Aereas Airbus A330-200, registration PT-MVF performing flight JJ-8055 from Paris Charles de Gaulle (France) to Rio de Janeiro Galeao,RJ (Brazil) with 160 passengers, was climbing out of Charles de Gaulle Airport's runway 27L when the crew stopped the climb at FL160, squawked emergency, dumped fuel and returned to Charles de Gaulle Airport for a safe landing on runway 27L about 80 minutes after departure.

The airline reported the aircraft suffered a technical problem. The flight has been rescheduled for Jan 25th and is estimated to depart Paris with a delay of 19.5 hours, the passengers were taken to hotels.

Passengers reported the aircraft was about 10 minutes into the flight when a loud bang was heard followed by serious vibrations and an announcement from the flight deck that the right hand engine (PW4168) had failed and needed to be shut down. The aircraft would dump fuel and return to Paris.

A TAM Linhas Aereas Airbus A330-200, registration PT-MVF performing flight JJ-8055 from Paris Charles de Gaulle (France) to Rio de Janeiro Galeao,RJ (Brazil) with 160 passengers, was climbing out of Charles de Gaulle Airport's runway 27L when the crew stopped the climb at FL160, squawked emergency, dumped fuel and returned to Charles de Gaulle Airport for a safe landing on runway 27L about 80 minutes after departure.

The airline reported the aircraft suffered a technical problem. The flight has been rescheduled for Jan 25th and is estimated to depart Paris with a delay of 19.5 hours, the passengers were taken to hotels.

Passengers reported the aircraft was about 10 minutes into the flight when a loud bang was heard followed by serious vibrations and an announcement from the flight deck that the right hand engine (CF6) had failed and needed to be shut down. The aircraft would dump fuel and return to Paris.

An Aeroflot Airbus A320-200, registration VQ-BBB performing flight SU-874 from Sochi to Moscow Sheremetyevo (Russia) with 83 passengers, was enroute near Krasnodar (Russia) when the crew needed to shut an engine (CFM56) down and diverted to Krasnodar for a safe landing.

A number of passengers have been rebooked onto other flights.

The captain (54, ATPL, 22,400 hours total, 5,300 hours on type) was pilot flying, the first officer (52, ATPL, 10,109 hours total, 4,459 hours on type) was pilot monitoring, a second first officer (49, ATPL, 8,300 hours total, 490 hours on type) occupied the observer seat, when the aircraft climbed out of Tokyo Narita's runway 16R.
According to the flight data recorder the aircraft climbed through 11,700 feet MSL when the right hand engine's variable stator vanes closed, the engine exhaust temperature rose, vibrations occurred, bleed valve #2 opened, the low pressure compressor's rpm (N1) and high pressure compressor's rpm (N2) started to roll down and the fuel flow fell to zero. 37 seconds after the onset of the engine failure the crew declared emergency, the right throttle lever was moved to idle 7 seconds later and another 8 seconds later the engine cut-off lever was moved into the off position. 6 minutes after the engine failure the crew began to dump fuel and landed safely on Narita's runway 16R 46 minutes after the engine failure.

The crew reported the engines were operating normally during takeoff and first stage of climb with no abnormal parameters observed. About 7 minutes after departure, while climbing through about 11,300 feet, a big bang was heard followed by a "Hugh" sound, the engine's N2 rolled down to near zero within 3 seconds, the nose yawed about 10 degrees to the right. The severe engine damage and related checklists were actioned with the captain remaining pilot flying and both first officers running the checklists, the right hand engine was shut down, no fire indication was observed, and the crew initiated the return to Narita. Fuel was dumped bringing the aircraft weight down to 480,000 lbs, MLW 460,000 lbs, before approach and landing commenced. The aircraft touched down at 473,000 lbs slightly overweight.

A post flight inspection found the rotor #2 (N2) seized, a complete borescopic inspection was not possible due to dust, (& .....) where view was not obstructed, ... debris, damaged blades and desposits were seen. The right hand engine had accumulated 31,030 hours flying time in 3,816 cycles with 1,323 hours since last inspection in May 2010.

A detailed inspection of the engine carried out by the NTSB found damage to the trailing edges of all 4 low pressure compressur stage blades, all but a total of 3 blades of the 5 stages of high pressure compressor blades (40 blades per stage) were fractured at the root and departed, about half of the variable stator vanes at the 5th stage of the high pressure compressor were ruptured with the rest being bent, the blades of stage 6 of the high pressure compressor were damaged (about half ruptured, about half bent counterclockwise in the direction of rotation), the variable stator vanes at stage 6 had tears and dents in the leading and trailing edges, the blades of stage 7 of the high pressure compressor were bent clockwise (against direction of rotation). The NTSB found that the damage was consistent with the closure of the inlet guide vanes (IGV) of the high pressure compressor, which was considered to be caused by some sort of corruption to the control lever/control pin. Due to the closure of the IGV the homogenous airflow was disrupted resulting in high frequency pulsations with the high pressure compressor turning at 10,000 revolutions per minute. These pulsations caused vibrations and resulted in fatigue failures.

As (a) result of the examination of the engine by the NTSB the fifth stage of the high compressor as well as the inlet guide vanes underwent detailed examination. Pins 39-74 were visually inspected, heat discoloration was detected on pin holes 63, 67 and 70 suggesting welding repairs. Pins 46,49,51,55,62,63,65,67,74 had cracked welding, the pins had rotated in their holes, pin hole 73 had become slightly oval with the pin missing. The pin could not be located.

All welds of the upper pins 1-38 were found intact.

The inspection of the IGV synchronisation ring, the welding, heat discoloration etc. suggested the IGV ring had been repaired, maintenance documentation however did not contain any such entry.

The JTSB analysed that the crew response was appropriate and adequate.

It was probable that pin 73's welding cracked similiar to other pins in the synchronisation ring and rotated in its pin hole evident by the deformation of the pin hole. While the aircraft was climbing out of Narita the pin separated and such released the lever arm controlling the IGV which turned closed in response creating an obstacle in the airflow which resulted in the air flow in the engine pulsating. The resulting high frequency vibrations caused fatigue failure which initiated a chain reaction downstream through the high pressure compressor causing the damage of the blades and variable stator vanes.

An Air France Boeing 777-300, registration F-GSQC performing flight AF-126 from Paris Charles de Gaulle (France) to Beijing (China), was enroute at FL290 about 90nm southwest of Berlin Tegel Airport (Germany) when the crew reported a fuel leak at engine #1 (GE90, left hand), entered a holding at FL200 and FL180 dumping fuel and diverted to Berlin Tegel for a safe landing on runway 08L about one hour after deciding to divert.

The airline reported due to a technical incident the itinerary of the flight has been changed.

An Air France Boeing 777-300 (Sevrien : Boeing 777-300ER) registration F-GSQV performing flight AF-454 from Paris Charles de Gaulle (France) to Sao Paulo Guarulhos,SP (Brazil) with 277 passengers, had just reached initial cruise level 290 about 125nm southwest of Paris when the crew decided to return to Paris due to engine (GE90)**** vibrations. The aircraft dumped fuel at FL200 and landed safely on Charles de Gaulle's runway 08L about 90 minutes after departure.

An Egypt Air Express Embraer ERJ-170, registration SU-GDF performing flight MS-739 from Cairo (Egypt) to Amman (Jordan) with 62 passengers, was climbing out of Cairo when the crew reported engine trouble and returned to Cairo for a safe landing about 60 minutes after departure.

A replacement Embraer ERJ-170 registration SU-GDJ reached Amman with a delay of 2 hours.

An American Airlines Boeing 767-300, registration N360AA performing flight AA-837 from New York JFK,NY (USA) to Port au Prince (Haiti) with 193 passengers and 10 crew, was climbing through 10,000 feet out of New York's runway 04L when the crew reported the right hand engine (#2, CF6******) on fire. About 3 minutes later, already on approach back to New York, the crew reported "the right hand engine fire light has just gone out, finally". The aircraft landed safely on JFK's runway 04R about 20 minutes after departure and stopped on the runway requesting emergency services to check the engine and the brakes.

The runway was closed for about 15 minutes.

The FAA reported the crew reported a #1 engine (left hand******) fire indication, the aircraft received "unknown damage".

An American Airlines Boeing 777-200, registration N753AN performing flight AA-908 (STA Feb 7th, ATA Feb 8th) from Buenos Aires Ezeiza,BA (Argentina) to Miami,FL (USA), was just rotating for takeoff from Ezeiza's runway 11 when the left engine (Trent 800) suffered a compressor stall emitting a loud bang. The aircraft climbed out and levelled off at 3000 feet, the crew secured the engine and returned to Ezeiza's runway 11 for a safe overweight landing about 15 minutes after departure.

The flight was cancelled.

A Delta Airlines Boeing 757-300, registration N596NW performing flight DL-1992 from Minneapolis,MN to Orlando,FL (USA), was climbing out of Minneapolis when the crew levelled off at FL190 and shut the right hand engine (PW2040) down. The aircraft returned to Minneapolis for a safe landing on runway 30L about 30 minutes later, stopped after vacating the runway and requested emergency services to check brakes and the engine.

A replacement Boeing 757-300 registration N595NW reached Orlando with a delay of 3:10 hours.