747Dreamlifter
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Thrust Reverser Problems With GE90's?

Fri Nov 30, 2007 9:41 pm

Registration 9V-SWL is the newest triple-7 received by SQ on 26 Oct 2007. Looking at the picture posted on 16 Nov, I noticed that the reverser cowling on right GE90 is of a different color indicating a possible replacement. Is there a problem with the thrust reverser units on this high output engine.???

Just wondering since this aircraft is only a month old. Thanks.


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flipdewaf
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RE: Thrust Reverser Problems With GE90's?

Fri Nov 30, 2007 9:53 pm

Components are more likely to fail at the start and the end of their service life (the bathtub model) so its not too shocking, could always be a case of ramp rash.

Fred
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tdscanuck
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RE: Thrust Reverser Problems With GE90's?

Sat Dec 01, 2007 2:13 am



Quoting 747Dreamlifter (Thread starter):
Registration 9V-SWL is the newest triple-7 received by SQ on 26 Oct 2007. Looking at the picture posted on 16 Nov, I noticed that the reverser cowling on right GE90 is of a different color indicating a possible replacement. Is there a problem with the thrust reverser units on this high output engine.???

Not any more so than any other aircraft I'm aware of. T/R's are finicky on a good day. Ramp rash is always an option for T/R's (they get hit a lot). It's also possible that they robbed a T/R off this aircraft when it was still in post-delivery check to serve an AOG line aircraft.

Spare T/R's are also really expensive, so they may have swapped the "mint" T/R from the delivery aircraft with an older one in spares so that their spare would be a low hours unit. This type of swap is fairly common with engines and tires as well.

Tom.
 
fr8mech
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RE: Thrust Reverser Problems With GE90's?

Sat Dec 01, 2007 3:15 am

I don't know anything about the GE90, but I do know reversers. A reverser half or translating sleeve change is usually a result of damage from some external source. Rarely do the structural components fail to the point where the half must be replaced.
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HAWK21M
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RE: Thrust Reverser Problems With GE90's?

Sat Dec 01, 2007 7:45 am

It looks like the C duct was replaced.
Could be mechanically related or Damage sustained on line.
regds
MEL
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BR715-A1-30
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RE: Thrust Reverser Problems With GE90's?

Tue Dec 04, 2007 5:40 am

Or like some other cases, it could have just been a case of "correct color not available"
Puhdiddle

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