AT
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Comparison Of Various Engine Types On The B-777

Sun Dec 23, 2007 7:59 pm

Happened to see two British Airways 777s side by side last week -- one with the Rolls Royce Trent Engines, the other with GE, and it suddenly struck me how much bigger/ wider/ rounder the GE engines looked vis a vis RR.
Does the increase in physical size translate into increase in power or performance? . And where in the spectrum does the Pratt and Whitney fit in?

Also, can someone provide a comprehensive list of which airline operates which engines on their Triple 7s.
Besides BA are there are any airlines that use multiple engine types?

Thanks, and look forward to your responses.
 
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1337Delta764
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RE: Comparison Of Various Engine Types On The B-777

Sun Dec 23, 2007 8:09 pm



Quoting AT (Thread starter):
Also, can someone provide a comprehensive list of which airline operates which engines on their Triple 7s.
Besides BA are there are any airlines that use multiple engine types?

Delta's 777-200ERs use RR engines, however, their 777-200LRs will use GE as GE is the only option on the 77L and 77W.
The Pink Delta 767-400ER - The most beautiful aircraft in the sky
 
egnr
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RE: Comparison Of Various Engine Types On The B-777

Mon Dec 24, 2007 2:42 am

Singapore Airlines use RR Trents on their 772s and 773s, but of course have GE90s on the 77Ws. Same situation at Cathay Pacific and at Emirates (where they also have the GE90 powered 77L).

JAL originally selected PW on their 772s and 773s, but later deliveries of 772s have had GE90s and of course the 77Ws have GE90s as well.

ANA have PW engines on their 772s and 773s, but GE90s on the 77W.

[Edited 2007-12-23 18:42:36]
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qslinger
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RE: Comparison Of Various Engine Types On The B-777

Mon Dec 24, 2007 2:57 am



Quoting EGNR (Reply 2):
77Ws

An idiots question, what does 77W translate to? Also IIRC?

I seem to come across a lot of this stuff but cannot decipher it. If someone could list all the jargon used here, that would be great. Eg: MX..Maintenance.
Raj Koona
 
pilotpip
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RE: Comparison Of Various Engine Types On The B-777

Mon Dec 24, 2007 3:44 am

I don't know about the power numbers, but the Pratts SOUND cooler. I have to stop and watch when one of UAL's taxis by in ORD. You can't mistake that hum.
DMI
 
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BreninTW
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RE: Comparison Of Various Engine Types On The B-777

Mon Dec 24, 2007 3:48 am



Quoting Qslinger (Reply 3):
An idiots question, what does 77W translate to? Also IIRC?

77W should be the 777-300ER
77L = 777-200LR

IIRC = if I remember (recall) correctly
AFAIK = as far as I know
NIMBY = not in my backyard
 
thegeek
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RE: Comparison Of Various Engine Types On The B-777

Mon Dec 24, 2007 4:05 am



Quoting Qslinger (Reply 3):
An idiots question, what does 77W translate to? Also IIRC?

Not an idiots question. 77W = 777-300ER. Not intuitive at all, in fact it reads like it's the Worldliner.

IIRC = If I Recall Correctly. (This one google probably would have told you)
 
GearDownPlease
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RE: Comparison Of Various Engine Types On The B-777

Mon Dec 24, 2007 9:39 am



Quoting Brenintw (Reply 5):
77W should be the 777-300ER
77L = 777-200LR

IIRC = if I remember (recall) correctly
AFAIK = as far as I know
NIMBY = not in my backyard

Hi, you also forgot this one :

SABENA = Such A Bloody Experience Never Again  Silly

No, seriously, thanks for the meaning of these "AFAIK" or "IIRC" terms, I didn't know as my mother tongue is French... I guess you learn something every day  highfive  !

Regards, Stéphane
CItro�«n SM ? Sa Majest�© !
 
qslinger
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RE: Comparison Of Various Engine Types On The B-777

Wed Dec 26, 2007 1:32 am

thank you guys, "IIRC" I am a bit more enlightened now.....  Smile
Raj Koona
 
Mir
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RE: Comparison Of Various Engine Types On The B-777

Wed Dec 26, 2007 2:06 am



Quoting AT (Thread starter):
Besides BA are there are any airlines that use multiple engine types?

While many airlines will use different engine types on different types of 777 (as mentioned, only the GE is available on the 77W and 77L, so airlines like DL, SQ and CX don't have much choice), AFAIK BA is the only airline to use different engine types on the same model in its 777 fleet.

-Mir
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SEPilot
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RE: Comparison Of Various Engine Types On The B-777

Wed Dec 26, 2007 7:14 pm



Quoting AT (Thread starter):
Happened to see two British Airways 777s side by side last week -- one with the Rolls Royce Trent Engines, the other with GE, and it suddenly struck me how much bigger/ wider/ rounder the GE engines looked vis a vis RR.

Perhaps another ignorant question, but what model 777 had the GE engines? If it was a 77W or 77L it makes sense that the engine would be bigger. Does BA have any 777NG's?
The problem with making things foolproof is that fools are so doggone ingenious...Dan Keebler
 
Mir
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RE: Comparison Of Various Engine Types On The B-777

Wed Dec 26, 2007 7:51 pm



Quoting SEPilot (Reply 10):
Does BA have any 777NG's?

They do not, so it would have to be a 777-200ER.

-Mir
7 billion, one nation, imagination...it's a beautiful day
 
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SEPilot
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RE: Comparison Of Various Engine Types On The B-777

Wed Dec 26, 2007 8:33 pm



Quoting Mir (Reply 11):
They do not, so it would have to be a 777-200ER.

Thanks for the info.
The problem with making things foolproof is that fools are so doggone ingenious...Dan Keebler
 
egnr
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RE: Comparison Of Various Engine Types On The B-777

Thu Dec 27, 2007 3:21 pm



Quoting EGNR (Reply 2):
JAL originally selected PW on their 772s and 773s, but later deliveries of 772s have had GE90s

To fully correct myself, JAL's 772 (non-ER) are PW powered. Their 772ER are GE90-powered.

Quoting Mir (Reply 11):
Quoting SEPilot (Reply 10):
Does BA have any 777NG's?

They do not, so it would have to be a 777-200ER.

Or it could have been a 772 (non-ER). BA still operate 3 of these AFAIK - G-ZZZA, G-ZZZB and G-ZZZC. BA did have five 772 (non-ER). The two other aircraft G-ZZZD and G-ZZZE left the BA fleet in 2002 to return to Boeing who then leased the aircraft out to Khalifa, Air Algerie and Varig. The former G-ZZZE is to be scrapped, and former G-ZZZD is noted as 'retired'.

Of the 777-236ERs...

Registrations beginning with G-VII have GE90s.
G-RAES is also GE90-powered.
Registrations beginning G-YMM* have RR Trents.
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