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B752 With One Smoking Engine - Why?

Fri Feb 20, 2004 7:41 am

Whilst waiting on my BD flight from MAD-LHR on Tuesday, I was observing the a/c in front of us during t/o. My question is that there was an IB 752 that took off and had an extremely smoky left engine, smoking more than a B732. The other engine was fine, but the left engine wasn't. Is there any reason why one engine would smoke a lot more than the other?
 
DeltaMD11
Posts: 1678
Joined: Sat Dec 07, 2002 4:56 am

RE: B752 With One Smoking Engine - Why?

Fri Feb 20, 2004 8:39 am

RB.211-535's are known to have a bit of a very noticeable blue exhaust at times. Only explanation that I can assert.....
Too often we ... enjoy the comfort of opinion without the discomfort of thought. - John Fitzgerald Kennedy
 
N243NW
Posts: 1597
Joined: Thu Jul 24, 2003 4:29 am

RE: B752 With One Smoking Engine - Why?

Fri Feb 20, 2004 10:04 am

Yes, indeed the -535s can get a bit sooty, especially during start-up. In fact, I was watching the PHL webcam from http://www.jfktower.com/liveatc.htm a few weeks ago when I noticed a plume of blue smoke just barely within the view of the camera. When a UA 757 taxied by a few seconds later, it had become clear that it was the one that was emitting the smoke. In your case, it was probably just residual fuel from start-up or the previous shutdown being ignited in the tailpipe during takeoff. Rather common on 757s.
-N243NW Big grin
B-52s don't take off. They scare the ground away.
 
L-188
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Joined: Wed Jul 07, 1999 11:27 am

RE: B752 With One Smoking Engine - Why?

Fri Feb 20, 2004 2:39 pm

Engines are too expensive to remove as pairs.

So you end up with engines with different times. And figure that the closer to O/H an engine gets the less power it is going to produce, the more fuel it is going to burn, and the more smoky it will get.
OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.
 
Guest

RE: B752 With One Smoking Engine - Why?

Fri Feb 20, 2004 6:18 pm

Guys, this wasn't on start up. It was during t/o and initial climb. The smoke was not blue, but similar to the kind of smoke a 732 puts out when taking off and climbing. I have never seen a 757 with such a sooty engine during this phase of flight. It's a shame I didn't have my camera out.
 
trekster
Posts: 4319
Joined: Fri Dec 26, 2003 2:47 am

RE: B752 With One Smoking Engine - Why?

Fri Feb 20, 2004 9:48 pm

i have a video on SXM.

There is a corsair 747 taking off and just after the front gear lifts of the ground engine 2 lets go of a tonne of white smoke, why is that.
Where does the time go???
 
yakfixer
Posts: 9
Joined: Mon Aug 18, 2003 8:21 pm

RE: B752 With One Smoking Engine - Why?

Tue Feb 24, 2004 1:19 am

Hey N243NW,
United's 757's are all Pratt powered.
Possibly they smoke also, but it is not a Rolls.
 
DeltaMD11
Posts: 1678
Joined: Sat Dec 07, 2002 4:56 am

RE: B752 With One Smoking Engine - Why?

Tue Feb 24, 2004 5:34 am

Txi,
I wasn't talking about the engine on start up...I was talking about when it is in general operation. The smoke has a blueish tint to it....you see it commonly on the RR Trent 800's as well.
Too often we ... enjoy the comfort of opinion without the discomfort of thought. - John Fitzgerald Kennedy
 
N243NW
Posts: 1597
Joined: Thu Jul 24, 2003 4:29 am

RE: B752 With One Smoking Engine - Why?

Wed Feb 25, 2004 12:06 pm

Yakfixer-
You are correct. It probably wasn't a UA aircraft I saw with the smoke at PHL. I can't remember what airline it was, though. Do DL or NW have any RR powered 752s? Might have been one of those. Thanks for pointing that out.
-N243NW Big grin
B-52s don't take off. They scare the ground away.
 
MD11LuxuryLinr
Posts: 1311
Joined: Tue Jul 22, 2003 8:34 am

RE: B752 With One Smoking Engine - Why?

Wed Feb 25, 2004 12:41 pm

Nah.. if your were watching a PHL cam you more than likely saw a US Airways 757, they're all RR powered.. We get about a thousand pass through here a day. (sarcastic). The only other US carrier that flies Rolls powered 757s through here is AA.
Caution wake turbulence, you are following a heavy jet.
 
N243NW
Posts: 1597
Joined: Thu Jul 24, 2003 4:29 am

RE: B752 With One Smoking Engine - Why?

Thu Feb 26, 2004 12:04 pm

Now that I remember, it was probably a US Airways plane I saw. Makes perfect sense; thanks for clearing that up, MD11.
-N243NW Big grin
B-52s don't take off. They scare the ground away.

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