The 777 crash - another theory

If the software used for control has any component in it that came
from the Seattle Washington area my guess is someone pressed alt-
control-delete.


On Jan 22, 10:27 am, D Ramapriya wrote:
Here's an intriguing take on what might have caused the 777's engine
to shut down. A dramatic pic of the moment of impact included...http://thesun.co.uk/sol/homepage/news/article711639.ece

Ramapriya

WingFlaps wrote in
:

On Jan 23, 7:08*pm, Bertie the Bunyip wrote:
Jules wrote in
news:yLylj.2338 :


We don't have a ****ing phone on the airplane!
Except my own cellphone which I use to call up and whine at
(s)crewing.



Aha! So that explains the whine a poster was asking about the other
day!
Does anyone know if both engines feed off the same tank(s) on
approach? It was at the end of a 10 hour flight wasn't it?

Well, they shouldn't be off the same tank. It's always tank to engine on
approach in any case fo rany transport aircraft. During climb and cruise
you'd uce the center tank, but even then when it runs out it automatically
feeds from the appropriate wing tank in any transport. The fuel systems are
really incredibly simple from the pilot's point of view. You turn all the
pumps on and forget them until you're parked at the other end.


Bertie

D Ramapriya wrote in news:3a2a1504-fbc3-4f53-938e-
:

On Jan 23, 1:15 pm, WingFlaps wrote:

Does anyone know if both engines feed off the same tank(s) on
approach? It was at the end of a 10 hour flight wasn't it?


Don't know about the 777 but I've heard that on the A320 and A330,
there are six main pumps - two in the center tank and two in each
inner tank, and each engine is fed with one pump in the center tank
and with the two pumps in its own side inner tank. When inner tanks
reach low level, valves between outer and inner open and an automatic
gravity transfer occurs (on one of the A330 variants, fuel transfers
from center tank to wing tanks are managed through a transfer valve).

Nope. You can't transfer fuel from one tank to another in flight.


Bertie

Jules wrote:
It is certainly significant if BA says they will be looking into it.
Perhaps they are lunatics?

The article was vague but it sounds like the lady, through whatever
bumbling got put through on a phone patch to the plane. On 747-400 this
can not be initiated from the ground. Can it be on the 777? Tomorrow I
may phone a friend of mine and ask. I can't imagine what actually
happened???? Can maintenance call up the plnane and access the ships
systems? Could it be a one in a million chance of it happening by
accident? Did someone activate their cellphone and call and say, "Honey
wel will be landing soon."???

How is it on Airbus? On some I was told maintenance is always in the
loop. And if anything goes wrong a report is datalinked right away.
Perhaps mr airbus will shed some light on this???


Please remember that "The Sun" is roughly comparable to the "National
Enquirer."

Don't take it personal, it is sop in this newsgroup to pick away at
people; like crows, with a roadside carcass.


I confess to getting worn to a frazzle about such matters years ago
until it dawned that unless I'm being attacked over the truth, it
doesn't matter at all. Ditto over the past few days too. If people get
worked up and irksome, howsoever warranted or otherwise, over
inaccurately used words and vent diatribe, too bad. But the seriously
good side-effect of it all is that I think my conveyancing may
actually be improving all the time

I don't know if "The Sun" is the best source of aviation news -- but IMHO
any poster that can use "myopic", "ergo", and "conveyancing" in a single
thread has carried the day...

;-)
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

"Jay Honeck" wrote in
news:knIlj.45$v.43@attbi_s22:

Don't take it personal, it is sop in this newsgroup to pick away at
people; like crows, with a roadside carcass.


I confess to getting worn to a frazzle about such matters years ago
until it dawned that unless I'm being attacked over the truth, it
doesn't matter at all. Ditto over the past few days too. If people
get worked up and irksome, howsoever warranted or otherwise, over
inaccurately used words and vent diatribe, too bad. But the seriously
good side-effect of it all is that I think my conveyancing may
actually be improving all the time

I don't know if "The Sun" is the best source of aviation news -- but
IMHO any poster that can use "myopic", "ergo", and "conveyancing" in a
single thread has carried the day...


You would.


Bertie

Gig 601XL Builder wrote in
:

Jules wrote:
It is certainly significant if BA says they will be looking into it.
Perhaps they are lunatics?

The article was vague but it sounds like the lady, through whatever
bumbling got put through on a phone patch to the plane. On 747-400
this
can not be initiated from the ground. Can it be on the 777? Tomorrow
I
may phone a friend of mine and ask. I can't imagine what actually
happened???? Can maintenance call up the plnane and access the ships
systems? Could it be a one in a million chance of it happening by
accident? Did someone activate their cellphone and call and say,
"Honey
wel will be landing soon."???

How is it on Airbus? On some I was told maintenance is always in the
loop. And if anything goes wrong a report is datalinked right away.
Perhaps mr airbus will shed some light on this???


Please remember that "The Sun" is roughly comparable to the "National
Enquirer."


Maybe even worse, but the scary thing is it's not sold in supermarket
checkout lines to people who bite the heads off chickens. It has a huge
circulation. One of the biggest in Britain.

Most of their other papers aren't much better and they actualy have a
few that are worse. Their equivelant of the Enquirer was called he Sport
and it was simply beyond belief. I used to look for it lying around in
pubs and such when I would be in the UK. (no way would I pay for it) It
had such gems in it as "World War 2 Nazi bomber found on moon" (I'm not
kidding).
But they really only have two what you might call genuine newspapers and
both of those are so politically polarised as to make them next to
useless as well.

Bertie

On Jan 23, 6:17 pm, Bertie the Bunyip wrote:
D Ramapriya wrote in news:3a2a1504-fbc3-4f53-938e-
:

On Jan 23, 1:15 pm, WingFlaps wrote:

Does anyone know if both engines feed off the same tank(s) on
approach? It was at the end of a 10 hour flight wasn't it?

Don't know about the 777 but I've heard that on the A320 and A330,
there are six main pumps - two in the center tank and two in each
inner tank, and each engine is fed with one pump in the center tank
and with the two pumps in its own side inner tank. When inner tanks
reach low level, valves between outer and inner open and an automatic
gravity transfer occurs (on one of the A330 variants, fuel transfers
from center tank to wing tanks are managed through a transfer valve).

Nope. You can't transfer fuel from one tank to another in flight.

Bertie


I could be wrong but ISTR that in a 777, if a center pump has low
output pressure with more than 1.1 t of fuel remaining, an EICAS
advisory message is displayed and the pilot has to operate a scavenge
system to transfer any remaining center tank fuel to the main tanks,
with actual transfer itself beginning only when either main tank
quantity is less than 13.1 t. ISTR also that in newer-generation 777s,
the scavenge system can be set to operate automatically.

Ramapriya

D Ramapriya wrote in
:

On Jan 23, 6:17 pm, Bertie the Bunyip wrote:
D Ramapriya wrote in
news:3a2a1504-fbc3-4f53-938e-
:

On Jan 23, 1:15 pm, WingFlaps wrote:

Does anyone know if both engines feed off the same tank(s) on
approach? It was at the end of a 10 hour flight wasn't it?

Don't know about the 777 but I've heard that on the A320 and A330,
there are six main pumps - two in the center tank and two in each
inner tank, and each engine is fed with one pump in the center tank
and with the two pumps in its own side inner tank. When inner tanks
reach low level, valves between outer and inner open and an
automatic gravity transfer occurs (on one of the A330 variants,
fuel transfers from center tank to wing tanks are managed through a
transfer valve).

Nope. You can't transfer fuel from one tank to another in flight.

Bertie


I could be wrong but ISTR that in a 777, if a center pump has low
output pressure with more than 1.1 t of fuel remaining, an EICAS
advisory message is displayed and the pilot has to operate a scavenge
system to transfer any remaining center tank fuel to the main tanks,
with actual transfer itself beginning only when either main tank
quantity is less than 13.1 t. ISTR also that in newer-generation 777s,
the scavenge system can be set to operate automatically.

I doubt it. There is no airliner I know of that allows fuel to be
transferred in flight.
I know a 777 pilot well. i'll ask him, but I'm pretty sure I know what
he'll say. We don't do scavenge, though. They feed. The only transfer is
to trim tanks.

Bertie

Bertie the Bunyip wrote:

Funny, I don't remember seeing a phone in the flight deck.

I'll have a good ol look around tomorrow.


Bertie

Well, that probably depends on the airline/aircraft, is sure possible to
have it installed as an option.
Several Business aircraft have them, mostly Iridium/Sat phone.