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Old 4th February 2006 | 21:08
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jonny dangerous
 
Joined: Nov 2001
Posts: 114
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From: FL 410
Gee, that seems prudent - There's no reason to think shutting one down will be of any benefit, is there? The leak is clearly NOT associated with an engine.

My thoughts precisely Barit1. Just that I don't see that specifically spelled out in my FOM. In a previous Airbus life, everything was pretty much identical QRH to QRH, SOP to SOP, and outfit to outfit. With Boeing, I am left somehow feeling that as my sim guy just said 2 wks ago,"Boeing assumes that you have a good working knowledge of the systems." Perhaps I had been lulled by Airbus's follow the ECAM (until such time as to do so would be less than prudent...) methodology. Now I am unsure if Boeing expects to me disagnose the above without the use of the NNC, or if it perhaps is something that was accidentally missed at the company level, or I am misreading the NNC. (Input needed from NG drivers)


Is there any reason to believe you won't have sufficient aileron available in an emergency unbalanced approach condition?
No Barit1, there isn't really. Just a limitation of 1000 lbs per side for random imbalance during normal ops. This being an emergency, that must go away, and certainly (Smokey?) it would have been flown during flight certification trials with a max imbalance.


2) Cancel Ctr tank feeding, and feed engines tank to engines. Would not advocate feeding both engines from a leaky tank... Instead operate at Max continuous, whilst also transferring fuel into Main tank and possibly centre tank from leaky one. as to Structural fuel limits, Its a tough call... Id try to remain in as long as in doing so, I was not sacrificing Fuel to get to diversion (assume tank empty for rough fuel calc)

Seems sensible advice to me, mbga9pgf.
One concern I might have is the FW CG condition from a full center tank.

I too had that concern. Then I thought of the swept wing design and the placement of the wing tanks is probably close to being near to inflight Center of Mass ranges. I rarely see it move appreciably during longer cruise segments.

I will definitely bring this to the attention of a TRI I know. Maybe he'll be able to shed some light. Any others with thoughts?
Thanks.
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