Wrong:

The Map display gets its information direct from the FMC. So the route displayed to the passengers is the actual route taken.

L337

At least they shut down the correct engine ..... NTSB can't even get the correct aircraft type!

Ur, wrong yourself L337, TopBunk is yet again correct (second time today I've made this comment).

The IFE system on the BA 744 (Rockwel Collins and not very good) does indeed start off with a great circle route, whih is then progressively over written with the actual track.

Edited due poor syntax

NTSB can't even get the correct aircraft type!

Yes, maybe they are too much concerned about other (non contributing) factors...

Regards

(Non brit)

Nice to see Shirley, I mean Steve Sheterline having to come out of the woodwork to counter the FAA input.

Go for it Shirley!!

Yup - even the press got confused with his nickname, calling him 'Shelterline' - kind of a mix of Shirl and Shet:D :D

So am I not correct in saying. "the route displayed to the passengers is the actual route taken"?

Either way it is a bit off topic. Let me go and have another look when I next operate. I'll pm you to keep it out the thread.

L337

The track already flown is the actual track.

The dotted line for "projected route to destination" appears to be the great circle projection having nothing to do with the actual flight plan route.

I have tried to stay off this thread as it's more a place for professional pilots rather than us SLF, frequent or otherwise. But this at least is something that I can report observing very frequently. :)

:) My goodness, my gracious, good golly gosh.
After all this very confusing stuff as to what you might be seeing on the back of your seat, is it not a minor miracle that any of the wonderful pilots flying today even manage to get from A to B without passing Beachy Head in an uproar with sextant upeld and wangling? Drifting down the rhumb line, but not, with me.:eek:

Ba268 pax re the "southerly route" I came out of SFO a day later our route took us just north of Denver, over ORD across lake Michigan then due north of Grand Rapids and Toronto finally making Oceanic just to the NW of Gander.

The winds that night were much more favourable at this latitude than going further North towards the pole and Churchill/Yellow Knife, looking at the sig weather chart it "appeared" that the jet stream we used had been at this latitude for a few days, certainly since we had left LHR for SFO 2 days before.

I thank you for your honest and open account.

I think personal preference for me would be an unsuccessful landing in the North Atlantic in winter. Like my missus says, "might as well be acid..."

What are the symptoms of a surge?
 

Does anyone know the answer to this?

Also, does anyone (any Heathrow service engineers out there?) know what was actually wrong with this engine? I had a quick look at it as I walked down the front aircraft steps at Manchester, but I couldn't see any obvious sign of damage. Was it just a sticking valve (or something similar)? - or was there any physical damage?

That would be nice :D

:D You might call an aortic imbalance a surge. One which I would prefer to defer. If you were in First Class, write the little ones a stroppy note and see what comes from it. It worked for me, when I lay on a beach all day in Barbados while Concorde stayed stuck in London. Oh yes, we shall leave the 'who was flying the thing' for another time.:=

You probably missed the link I posted in the first pages of this thread to www.fromtheflightdeck.com

which in turn shows all the info about engine failures in general as well as surges from a doucment published by the FAA, including supporting video

Yes for a surge alone the engine will rock and vibrate simply because the surge is localized and rotates backwards to the spinning rotor at about 1/4 rotor speed while at the same time producing pressure pulses at a rate of about 7 per second.. Since the mounts are single point in the top front, this rotating pressure wave causes the engine and pylon to shake and in turn the wing and passengers as well. It's all very short lived until the pilot retards the throttle and reduces the pressures in the engine.

The sparks seen could either be from rubbing of the blades against a case or moe likely a few loose bits in the engine.

Often the F/A s as well as the passengers are not familar with this and it can create some apprehension although it is typically ho-hum to the aircraft.

BA268pax ... tahnk you for that very informative, very interesting and generally useful passenger perspective.

Jordan

:) Yes indeed, my goodness and my gracious, I never did hear an aircraft go Ho Hum, at least not out of the jungle and that was a rumble tum too.

Thanks for the explanation. It makes sense now. My initial worry was that the shaking of the aircraft might indicate some kind of imbalance in the engine (such as rotor damage).

This is a long and entertaining thread which I have been reading with great interest.

However, I think it is about time that this crew was complimented for a job well done. The flight was conducted safely, efficiently and professionally.

Part of a professional pilot's job is to operate economically for the company with safety being the overriding consideration and this is precisely how this crew operated.

Having to deal with even a "technical" emergency at the end of a 9/10 hour flight on three engines cannot have been easy and I think the crew should be commended for acting in the correct manner.

In conclusion, I say, WELL DONE!

Î fully agree.

Well done to the crew.

Regards

I find it incredible that this type of decision could have been made!! The possibility of continuing on three engines is meant to facilitate airlines to continue onto a 'suitable' airport, i.e maintenance wise, logistics, etc. To argue that from the west coast of the USA to the east coast, onto Canada and over the north Atlantic to the UK, their are no 'suitable airports' is obsered! A 2nd eng failure over the north Atlantic, could have been a possibility. And then, I am afraid he would have to had called a 'Mayday'. Expalin that to the paying pax!! What are we thinking here, economics or saftey?:confused: