FAA URGENT 787 GE ENGINE ISSUE

[WingNut60]

Can anyone out there shed some insight into the implications for ETOPS certification while this sort of directive is in place?

[lomapaseo]

ETOPS shouldn't be at risk since this is a problem in the approach phase at low powers.

[KRviator]

Let's hope they don't have a depressurisation or other issue requiring an emergency descent then...

[Basil]

Try and get 100NM wx deviation in China

JDI!
When we did, the controller was going nuts esp since we crossed a national border in the process. When we changed freq there was a tacit understanding that least said soonest mended.

[NWA SLF]

GE is responsible for the engine - the problem is fan to cowl clearance, an engineering screw up as the information states that fuel efficiency will not be reduced - adequate blade tip clearance with the front edge insufficient. Engine installation - is that a Boeing task (I refer to the cowling design) or is that part of the engine package and totally GE's design? I presume increasing the clearance by grinding involves more than a crew of mechanics with Dremel grinders, which would really be cool watching from the window of your flight as you have loaded first in First Class and are able to look back at mechanics making the final touches before your plane is pushed back.

[lomapaseo]

That which is touched directly under the fan blades, belongs to GE under the FARs.

From my read of the AD I'm not aware of installation effects under other parts of the FARs

[barit1]

NWA SLF:

the problem is fan to cowl clearance

No - the clearance in question is between blade tips and the engine casings, GE parts, which are quite different from, and housed within the external Boeing cowl.

[pattern_is_full]

This is what GE delivers to Boeing - black and "green" casing already installed around the fan, by GE.

http://www.geaviation.com/engines/img/thumb-genx.jpg

[oliver2002]

Originally Posted by Bond'll Do

100 nm minimum avoidance around ITCZ -type weather has held me well over the last 40 yrs.

New engines are just being tested in-service. That will always be the case now.

Just avoid the weather.....what trainer ever told you to leave less than 100nm from severe weather? (in commercial pax a/c?). WTF?

I see. That may be possible in cruise (in sparsely populated airspace), but please tell me how you accomplish that when leaving cruise and descending below 20000ft on your way to an airfield like Singapore?