US officials have urged Boeing to make a change “urgent” on General Electric engines (GE) equipping 787 aircraft, which are likely to stop in full flight.
This problem is distinct from that which was grounded for several months in 2013 the entire fleet of this new generation of aircraft composite materials.
on January 29, one of the two engines of 787 Japan Airlines, for GEnx-1B PIP 2 model stopped suddenly as the plane was flying at 20,000 feet (6096 meters) above sea level.
the crew did not reach the restart but the plane was able to land with one engine, an older version of the GEnx-1B, PIP 1, minutes after the incident.
“the possibility of failure in flight of two engines (note: about 787 equipped uniquemement PIP 2 model) for the same problem is a pressing security issue, “ highlights the FAA
This instruction. FAA, which has authority only over US airlines, concerns 43 aircraft in the United States. But 175 787 aircraft owned by 29 airlines are affected worldwide, according to Boeing.
It applies to model engines GEnx-1B PIP 2 equipping the 787, says the FAA. The change must be made by September, told AFP Rick Kennedy, a spokesman for GE, which makes these engines.
Forty affected aircraft have already been repaired, told the AFP Doug Alder, a spokesman for the aircraft manufacturer, insisting that the problem only occurs in the winter and low altitude.
“Boeing and GE conducted a survey joint and cooperate with the FAA on a solution to completely solve the problem “ said Doug Alder in an email.
the two groups have proposed April 1, according to the spokesman, corrective actions to the airlines concerned. They must perform within 150 days following notification.
The investigation into the incident concluded that Japan Airlines ice buildup in the blades resulting friction that damaged the motor and caused a flight shutdown, according to the FAA.
the amendment requested by the federal government is on the thickness of the fan casing and is intended to avoid any friction.
the 787, which costs at least $ 206 million a copy at list prices, is a new generation of long-haul aircraft composite materials, supposed to be more efficient kerosene. It entered service in late 2011 with more than three years behind the original program.
Its development cost some $ 50 billion to Boeing, according to calculations of analysts.
He has accumulated technical setbacks. The most serious incidents took place in January 2013, with two severe cases of lithium-ion batteries overheating occurred first on a plane to Boston and another in Japan, which forced a device the company All Nippon Airways to make an emergency landing.
50 copies then outstanding have been grounded for more than three months.
in 2014 and 2015, delays at suppliers Boeing blew up the cost of production of the 787, which sealed the benefits of aircraft manufacturer.
in May 2015, the FAA has dealt a new blow to long-haul asking airlines operating the 787 to carry out regular maintenance of generators whose power is uninterrupted tension could result in loss of control of the aircraft in flight. The problem was due to a faulty software.
Japanese companies ANA Holdings and JAL are the two largest customers of the 787.
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