tirsdag 26. august 2014

B787 - En Air India maskin grounded - Mange motorer må sjekkes


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Air India 787 grounded for engine 

inspection, repair

WASHINGTON DC
Source: Flightglobal.com
22:02 21 Aug 2014
An Air India Boeing 787-8 is grounded through at least 23 August 
while GE Aviation inspects a potential fault in the accessory 
gearbox of both GEnx-1B engines installed on the aircraft, the 
engine maker says.
GE employees plan to complete the inspection and make replace
the gearboxes, if necessary, by 23 August, clearing the aircraft
to return to flight status, says a GE spokesman.
The same problem potentially affects a population of eight
GEnx-1Bs and GEnx-2Bs with accessory gearboxes made by
Avio, which is now a GE subsidiary.
GE recently discovered that eight accessory gearboxes could
have been made using an improper heat-treating process during
production.
The discovery was made after an accessory gearbox failed
on a 5 August flight by a Thomson Airways787-8, the GE
spokesman says. The flightcrew commanded an engine
shutdown and made an emergency landing.
The Air India 787-8 is the only such aircraft in service that
is equipped with both engines that are among the population
of eight with the potential heat treatment problem, the spokesman
says.
GE plans to complete inspections and make any necessary
replacements within a few days, the spokesman adds.
[UPDATE: Adds the GEnx-2B to the pool of affected engines and 
clarifies that GE has not determined that all eight gearboxes were 
made improperly.]

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