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BA273 LHR-SAN 77W Today?!

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Old Nov 24, 2013, 6:18 pm
  #1  
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BA273 LHR-SAN 77W Today?!

I saw that G-STBD has flown BA273 LHR-SAN today, on what is normally a 100% 777-200 route.

Any reason why the 77W might be flown to SAN? It is not like it is a short hop in between other 77W flights . . . besides can a fully laden 777-300ER to London take-off from SAN!?
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Old Nov 24, 2013, 7:22 pm
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BA273 LHR-SAN 77W Today?!

But it won't be fully laden if it only has the load of a 772.
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Old Nov 24, 2013, 7:27 pm
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CX and SQ both fly a 777-300ER on the far longer SFO-HKG route. SFO is plenty big enough, although no idea why BA sent one there. Maybe some event going on where they could sell extra seats?
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Old Nov 24, 2013, 7:46 pm
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Originally Posted by phol
CX and SQ both fly a 777-300ER on the far longer SFO-HKG route. SFO is plenty big enough, although no idea why BA sent one there. Maybe some event going on where they could sell extra seats?
SFO's runways are much longer than SAN's. That's the issue.
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Old Nov 24, 2013, 7:46 pm
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Originally Posted by highpeaklad
But it won't be fully laden if it only has the load of a 772.
I guess so, if that is all it is carrying, but might the 77W have been substituted because of higher demand than 772?
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Old Nov 24, 2013, 7:47 pm
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Originally Posted by phol
CX and SQ both fly a 777-300ER on the far longer SFO-HKG route. SFO is plenty big enough, although no idea why BA sent one there. Maybe some event going on where they could sell extra seats?
This is SAN (San Diego) not SFO, so the runway is much shorter.
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Old Nov 24, 2013, 8:50 pm
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Originally Posted by CX828
This is SAN (San Diego) not SFO, so the runway is much shorter.
Oops, I misread ^

Funnily enough, according to Boeing specs the 773 requires less runway than the ER 772s (11k ft vs. 10k ft at sea level). So shouldn't be a problem with runway length.
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Old Nov 24, 2013, 10:06 pm
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BA273 LHR-SAN 77W Today?!

My guess would be shortage of aircraft...?
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Old Nov 24, 2013, 10:18 pm
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I assume the 777-300 was used as replacement for an unserviceable 777-200.
I am flying this route soon so I sometimes keep an eye out to see how it performs - noticed yesterday that the flight went "delayed contact airline" and then back to "On time".

Hence my guess that they found a nice new 300 to replace a "tech" 200.
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Old Nov 24, 2013, 11:12 pm
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Dont forget the 77W is far more powerful than the 772

The 77W with a 10.2k ft runway has an MTOW of 328.4 based on 34c OAT and Flaps 15 T/O. Thats for the GE115 engines.

Last edited by DXBFlyer; Nov 24, 2013 at 11:18 pm
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Old Nov 25, 2013, 3:50 am
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Any reason why the 77W might be flown to SAN?
G-YMMA was originally due to operate the SAN after arriving from CWL but it ended up staying there a little longer due to tech issues.

YUL was also operated by the 77W yesterday due to tech issues with other 777s!
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Old Nov 25, 2013, 7:22 am
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Originally Posted by DXBFlyer
The 77W with a 10.2k ft runway has an MTOW of 328.4 based on 34c OAT and Flaps 15 T/O. Thats for the GE115 engines.
For what it's worth, the GE90-115B is the only engine option for the 777-300ER, so your numbers are axiomatic for that model.
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Old Nov 25, 2013, 7:27 am
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It makes sense it was a substitute for a tech 772, as the flight did depart delayed.

Interesting that BA had 2 77W's lying around at LHR . . . to operate SAN and YUL yesterday. Perhaps a couple of the normal 77W routes (GIG, HKG, PVG) went out 772 yesterday instead . . ?
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Old Nov 25, 2013, 7:28 am
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A fully loaded 77W can get from DOH to IAD (6,926 miles). The distance from LHR-SAN is only 5,485 miles, less than 80% of the distance on the DOH-IAD route.
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Old Nov 25, 2013, 7:39 am
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Originally Posted by DXBFlyer
The 77W with a 10.2k ft runway has an MTOW of 328.4 based on 34c OAT and Flaps 15 T/O.
My calculations show 1.21ii jiggawatts per 7 bi-planes at atlantis sea levels, which SAN is of course.




(just messing around with no idea of what you wrote).
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