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B752 With One Smoking Engine - Why?  
User currently offlineTxiki1uk From , joined Dec 1969, posts, RR:
Posted (10 years 6 months 2 weeks 2 days 5 hours ago) and read 3263 times:

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?

10 replies: All unread, jump to last
 
User currently offlineDeltaMD11 From United States of America, joined Dec 2002, 1701 posts, RR: 34
Reply 1, posted (10 years 6 months 2 weeks 2 days 4 hours ago) and read 3185 times:

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
User currently offlineN243NW From United States of America, joined Jul 2003, 1630 posts, RR: 20
Reply 2, posted (10 years 6 months 2 weeks 2 days 3 hours ago) and read 3128 times:

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.
User currently offlineL-188 From United States of America, joined Jul 1999, 29795 posts, RR: 58
Reply 3, posted (10 years 6 months 2 weeks 1 day 22 hours ago) and read 3047 times:

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.
User currently offlineTxiki1uk From , joined Dec 1969, posts, RR:
Reply 4, posted (10 years 6 months 2 weeks 1 day 18 hours ago) and read 3014 times:

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.

User currently offlineTrekster From , joined Dec 1969, posts, RR:
Reply 5, posted (10 years 6 months 2 weeks 1 day 15 hours ago) and read 2974 times:

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.


User currently offlineYakfixer From , joined Dec 1969, posts, RR:
Reply 6, posted (10 years 6 months 1 week 5 days 11 hours ago) and read 2716 times:

Hey N243NW,
United's 757's are all Pratt powered.
Possibly they smoke also, but it is not a Rolls.


User currently offlineDeltaMD11 From United States of America, joined Dec 2002, 1701 posts, RR: 34
Reply 7, posted (10 years 6 months 1 week 5 days 7 hours ago) and read 2636 times:

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
User currently offlineN243NW From United States of America, joined Jul 2003, 1630 posts, RR: 20
Reply 8, posted (10 years 6 months 1 week 4 days 1 hour ago) and read 2322 times:

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.
User currently offlineMD11LuxuryLinr From United States of America, joined Jul 2003, 1385 posts, RR: 14
Reply 9, posted (10 years 6 months 1 week 4 days ago) and read 2304 times:

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.
User currently offlineN243NW From United States of America, joined Jul 2003, 1630 posts, RR: 20
Reply 10, posted (10 years 6 months 1 week 3 days 1 hour ago) and read 2118 times:

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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