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-   -   Goodbye BA Jumbos (https://www.pprune.org/aviation-history-nostalgia/634106-goodbye-ba-jumbos.html)

DaveReidUK 23rd Jul 2020 13:22


Originally Posted by champair79 (Post 10843454)
Great story. I believe in BA she was known as “Never Leaves Hangar” but same difference I guess. A proper hangar queen.

Strangely enough, by the time G-BNLH was retired in October 2009 it had flown more hours per day, on average, than many if not most of its fellow BA B744s.

So they must have let it out of the hangar occasionally. :O

standbykid 23rd Jul 2020 15:30

Most beautiful aircraft ever built. Crossed the pond countless times in one with various BA liveries. Farewell.

PAXboy 23rd Jul 2020 17:19

I recall the first time I crossed the Pond with only two engines (a BA 777) I felt nervous.

treadigraph 23rd Jul 2020 17:34


Originally Posted by PAXboy (Post 10844504)
I recall the first time I crossed the Pond with only two engines (a BA 777) I felt nervous.

AA 767 for me, Gatwick - Miami and return. All my subsequent trips were on 747s or A340s, not because of nerves, they were just all with Virgin! Haven't been for nearly two decades now.

GeeRam 23rd Jul 2020 18:47


Originally Posted by PAXboy (Post 10844504)
I recall the first time I crossed the Pond with only two engines (a BA 777) I felt nervous.

It was on a B757 for me.....Stanstead to Bangor and then Bangor to Orlando.....with short haul seat pitch.....horrible flight!
It was cheap for a reason.


srjumbo747 23rd Jul 2020 21:31

BA final 747 flight
 
Does anyone know where and when this will be?

DaveReidUK 23rd Jul 2020 22:01


Originally Posted by srjumbo747 (Post 10844655)
Does anyone know where and when this will be?

I'd be surprised if much planning has gone into that yet - BA has more important things to worry about at the moment.

In normal times, I would expect the retirement of a type to be marked by one or more commemorative flights, but these days I wouldn't take that for granted.

It may well be that the only remaining flights will be to wherever the airframes are going to be scrapped. That will certainly apply to the 9 aircraft currently at LHR (because BA no longer scraps aircraft in its own backyard); the five at Teruel may well be broken up there (as some have been previously); ditto some or all of the 14 at Cardiff (or possibly down the road at St Athan).

So the final BA 747 flight will likely be when the last of the 9 makes its final departure from LHR for wherever. I expect that to be a very emotional event, and I'll certainly be there to witness it.

PAXboy 23rd Jul 2020 22:53

The comparison of being in Y on the Triple was particularly painful - as my previous crossing had been on (registration) G-BOAC. :uhoh:

FlightlessParrot 24th Jul 2020 00:49


Originally Posted by PAXboy (Post 10844504)
I recall the first time I crossed the Pond with only two engines (a BA 777) I felt nervous.

Try crossing the Pacific (Auckland to Los Angeles) on two engines for the first time. Not even going close to Hawaii, as far as I could tell.

Alty7x7 24th Jul 2020 04:33


Originally Posted by tdracer (Post 10840234)
The wing was basically unchanged on the -400 (aside from the added winglets - and the winglets didn't really do much) - it was the -8 that got an aerodynamically re-profiled wing. The passenger 747-400 (and -300) had slightly better cruise drag relative to the -100/200 because the longer upper deck resulted in better area ruling at higher Mach numbers. Between about Mach 0.82 and 0.87 it all boiled down to fuel burn vs. speed.
During the 747-8 flight testing, I looked at flight test data from the flutter testing at Mach 0.98+ (presumably in a shallow dive - that was SOP for high speed flutter testing). I don't remember the altitude (it wasn't relevant to what I was looking for in the data - I was just interested in very high Mach number data). I was also on a 747-8 flight test where we cruised for over an hour at 37k/Mach 0.84 with an engine shutdown (granted, we were fairly light).

The -400 had a combination of wing extensions plus the winglets, versus the -300. It was a 0.85 airplane, and could get up to 0.92 cruise above 40k.

Bergerie1 24th Jul 2020 04:49

One of my old mates when asked why he had always flown four engine aircraft, repiled, "Because no one has built one with five engines."

dixi188 24th Jul 2020 13:18


Originally Posted by Bergerie1 (Post 10844834)
One of my old mates when asked why he had always flown four engine aircraft, repiled, "Because no one has built one with five engines."

Wasn't that quote credited to one of the Rolls Royce bosses?

CompassT4T5 24th Jul 2020 15:19

In the late 70's, I flew on a BA B747 LAX-LHR , after t/o we had an engine fire.
The Cpt. explained all & advised it was now out and we could still continue direct to LHR.

An hour later , he announced we would divert to JFK , as maintainance there would be in a good position to change the engine.
We landed safely & smoothly there, and were hoping for a min. 6h delay..........
This proved too ambitious , so ground customer services staff efficiently arranged overnight accommodation for all.

We received a memo under the hotel room door, stating that at 8am-9am approx there would be a quick buffet breakfast available,
and then would we all please proceed to the awaiting buses for the by then fixed a/c 's continuation to LHR
As expected, huge queues for the buffet !
I just made myself a coffee, grabbed a doughnut & looked for somewhere to sit .
I minute later I was approached by a lovely BA customer service agent , who said " Sir , are you ready to go, because a bus is going now ? "
I said " yes , eh , sure " ...I was directed to the BA check in desks with my LAX-LHR boarding card stub - and given my new boarding card ON CONCORDE !!

A great result - but I must say , after having flown in the B747 ( all versions incl. SP - excluding freighter ) 3m+ miles since 1971 , I have never felt safer in the air.
She will be truly missed

flash8 24th Jul 2020 21:26


Originally Posted by dixi188 (Post 10845180)
Wasn't that quote credited to one of the Rolls Royce bosses?

Could have been Bergerie1's old mate of course )

Compton3fox 25th Jul 2020 07:19

Well apart from the Trident..

Compton3fox 25th Jul 2020 07:22


Originally Posted by Bergerie1 (Post 10844834)
One of my old mates when asked why he had always flown four engine aircraft, repiled, "Because no one has built one with five engines."

Well apart from thr Trident!

dixi188 25th Jul 2020 12:39

The 145 has 5 APUs.

DaveReidUK 25th Jul 2020 19:08


Originally Posted by dixi188 (Post 10845924)
The 145 has 5 APUs.

Embraer or Eurocopter ?

tdracer 25th Jul 2020 20:21


Originally Posted by Alty7x7 (Post 10844823)
The -400 had a combination of wing extensions plus the winglets, versus the -300. It was a 0.85 airplane, and could get up to 0.92 cruise above 40k.

The extensions and winglets didn't do much for cruise speed - the higher aspect wing helped overall drag but the winglets were close to worthless. Although the winglets had looked good in the wind tunnel, the real world performance was so disappointing that there was a serious proposal from the aero types to simply get rid of them. However Boeing liked the 'look' and how the winglets distinguished the -400 from the earlier 747s (and while the winglets didn't help much, they didn't hurt). So they decided to keep the winglets.
There was a meaningful improvement in cruise drag due to the stretched upper deck and it's area ruling improvement. When they retrofit a few -200s with stretched upper decks they actually got enough fuel burn improvement to more than offset the additional weight. Apparently the improvement in cruise drag with the stretched upper deck was a bit of pleasant surprise - they hadn't looked at it that closely during the development of the -300, but it made it a no-brainer to include it on the -400...

treadigraph 25th Jul 2020 20:43


Although the winglets had looked good in the wind tunnel, the real world performance was so disappointing that there was a serious proposal from the aero types to simply get rid of them.
I seem to recall damaged winglets have occasionally been removed before a revenue flight and the aircraft flown home?


Apparently the improvement in cruise drag with the stretched upper deck was a bit of pleasant surprise - they hadn't looked at it that closely during the development of the -300, but it made it a no-brainer to include it on the -400...
Why did the production 747-400 and 800 freighters not have the stretched upper deck? Keep airframe weight down a bit to improve loads carried on the main deck?


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