Heathrow = Thrust Reversers deployed

Mxsmanic wrote:

Eeyore writes:

This PROVES you WRONG !

"We have received a report of two occurrences of engine thrust rollback
(reduction) during takeoff on Boeing Model 777-300ER series airplanes powered
by GE Model GE90-115B engines.

Investigation indicates that these events are the results of a software
algorithm in the FADEC that was introduced in software version A.0.4.5
(GE90-100 Service Bulletin 730021). "

I thought the BA 777 had Rolls-Royce engines.

It does. But both the relevant RR and GE engines use FADEC which requires software.
Neither engine has a mechanical throttle. It's controlled ENTIRELY by electronics.

My comment doesn't relate to who made the rotating machinery, but the opportunity
for a software induced failure.

http://en.wikipedia.org/wiki/FADEC

Graham

Eeyore wrote in
:



Mxsmanic wrote:

Eeyore writes:

This PROVES you WRONG !

"We have received a report of two occurrences of engine thrust
rollback (reduction) during takeoff on Boeing Model 777-300ER
series airplanes powered by GE Model GE90-115B engines.

Investigation indicates that these events are the results of a
software algorithm in the FADEC that was introduced in software
version A.0.4.5 (GE90-100 Service Bulletin 730021). "

I thought the BA 777 had Rolls-Royce engines.

It does. But both the relevant RR and GE engines use FADEC which
requires software. Neither engine has a mechanical throttle. It's
controlled ENTIRELY by electronics.

My comment doesn't relate to who made the rotating machinery, but the
opportunity for a software induced failure.

http://en.wikipedia.org/wiki/FADEC



Wow, a clueless-clueless connection. These are always entertaining!

Bertie

Eeyore writes:

It does. But both the relevant RR and GE engines use FADEC which requires software.
Neither engine has a mechanical throttle. It's controlled ENTIRELY by electronics.

Is the FADEC part of the engine or a separate box in the cockpit or elsewhere
(like an autopilot)?

Boeing never should have made the Airbus mistake.

Mxsmanic wrote:

Eeyore writes:

It does. But both the relevant RR and GE engines use FADEC which requires software.
Neither engine has a mechanical throttle. It's controlled ENTIRELY by electronics.

Is the FADEC part of the engine or a separate box in the cockpit or elsewhere
(like an autopilot)?

At least part of the FADEC system is installed right next to the engine itself. It's a
*system* not just one box.


Boeing never should have made the Airbus mistake.

FADEC happened long ago. It's nothing to do with Airbus. Do you think mechanical linkages
are any more reliable ?

Graham

Eeyore writes:

FADEC happened long ago. It's nothing to do with Airbus.

I was thinking about the general move to fly-by-wire in recent Boeing
aircraft.

Do you think mechanical linkages are any more reliable?

Absolutely. How often have mechanical throttle linkages for all engines
broken simultaneously in non-fly-by-wire airliners?

Mxsmanic wrote in
:

Eeyore writes:

FADEC happened long ago. It's nothing to do with Airbus.

I was thinking about the general move to fly-by-wire in recent Boeing
aircraft.

Do you think mechanical linkages are any more reliable?

Absolutely. How often have mechanical throttle linkages for all engines
broken simultaneously in non-fly-by-wire airliners?


Why, you don't fly anyway...


Bertie

Mxsmanic wrote:

Eeyore writes:

FADEC happened long ago. It's nothing to do with Airbus.

I was thinking about the general move to fly-by-wire in recent Boeing
aircraft.

Why just Boeing ?


Do you think mechanical linkages are any more reliable?

Absolutely.

They're not.

Graham

Eeyore wrote in
:



Mxsmanic wrote:

Eeyore writes:

FADEC happened long ago. It's nothing to do with Airbus.

I was thinking about the general move to fly-by-wire in recent Boeing
aircraft.

Why just Boeing ?


Oh this should be good.


Do you think mechanical linkages are any more reliable?

Absolutely.

They're not.

Very good.

Bertie

Eeyore writes:

Why just Boeing ?

Airbus made the FBW mistake almost from the beginning, years before Boeing.

They're not.

So, how many times have all mechanical throttle linkages broken on an
airliner?

Mxsmanic wrote in
:

Eeyore writes:

Why just Boeing ?

Airbus made the FBW mistake almost from the beginning, years before
Boeing.

They're not.

So, how many times have all mechanical throttle linkages broken on an
airliner?



Several, moron.

In fact, I've had a double throttle jam!





Bertie