TACAA320
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Emergency Report At SJO. An AA 737 Has Problems.

Sat Feb 18, 2006 4:02 am

An emergency report has been released few minutes ago. An aircarft [no model nor airline name released yet] with 120 passengers onboard as a problem with an engine. Channel 7 [local] the most serious TV news agency here, promised new info as soon as it is available.

[Edited 2006-02-17 20:10:57]
'Science without religion is lame, religion without science is blind'. Albert Einstein
 
TACAA320
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RE: Emergency Call At SJO

Sat Feb 18, 2006 4:09 am

It's a problem [apparently] with the left engine, I some smoke has been reported. It's a 737 from AA heading to MIA.
Now it's at the terminal.
Arrived safely!!!!!!!!!!
'Science without religion is lame, religion without science is blind'. Albert Einstein
 
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LTU932
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sat Feb 18, 2006 4:26 pm

I believe the flight in question was AA988, bound to Miami. More info here (in Spanish only, requires free registration): http://www.nacion.com/ln_ee/2006/febrero/18/sucesos1.html

And in this topic you can see one of the pictures taken by Tomás Cubero, who was there during the incident (Spanish only): http://costaricaaviation.com/forum/viewtopic.php?t=406

At some point during the T/O, loud bangs could be heard from the number 2 engine, with a large flame coming out for a few seconds, which prompted the captain to shut down the number 2 engine, circle around the pacific coast of Puntarenas Province to burn fuel and request an emergency landing. The aircraft landed safely after some 18 minutes of flight. Though what really stunned me was that on Channel 6, they showed a recount of accidents that happened over the last 20 years at SJO, making this look like a tragedy, which it wasn't, since it was just an engine fire caused by either a serious engine malfunction (sudden compressor stall for example), birdstrike, FOD or, as someone in the topic I linked suggested, contaminated fuel (the guy suggested that the state owned RECOPE, the national petrolium refinery, which has the sales monopoly over regular automobile gasoline and aviation fuel, had mixed Ethanol into the Jet-A to sell it cheaper, but I don't believe that).
 
baw716
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sat Feb 18, 2006 4:48 pm

Most US carriers flying to Central America will tanker their fuel, even though it is more expensive to do so than getting it down there. There is an issue with the quality of the jet fuel. I didn't think it was a problem at SJO, but I have heard it was a problem at MGA and CUN.

As for TACA...they gas up in Miami or San Salvador (they have an excellent facility there).

baw716
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LTU932
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sat Feb 18, 2006 5:08 pm

Quoting BAW716 (Reply 3):
There is an issue with the quality of the jet fuel. I didn't think it was a problem at SJO, but I have heard it was a problem at MGA and CUN.

I did hear about the same, but in PTY. It would still be hard to believe that RECOPE would even be desperate enough to intentionally contaminate the Jet-A they serve to other airlines.  banghead  If it was true, then SJO would belong to those airports with Jet-A of poor quality.

Quoting BAW716 (Reply 3):
Most US carriers flying to Central America will tanker their fuel

To be honest, either I just see that too late, or the fuel trucks that refuel the aircraft hardly ever come to those AA aircraft that come from MIA. I'll have to watch out for that next time I go to SJO.
 
as739x
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sat Feb 18, 2006 5:12 pm

Just a compressor stall. A big deal, yes and no! Pilots are well trained to deal with this. Alaska had the same issue going out of BOS maybe 2 years ago. The F/O was a friend of mine. He said its really not a huge deal, but does scare the $hit out of you! And specially the passengers. But everything is under control and easy to take care of.

ASLAX
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TACAA320
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sat Feb 18, 2006 11:42 pm

Quoting AS739X (Reply 5):
A big deal, yes and no! Pilots are well trained to deal with this.

I don't have a doubt that the pilots are well trained to deal with this. Nevertheless I don't want to be in such situation.
'Science without religion is lame, religion without science is blind'. Albert Einstein
 
MGASJO
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sun Feb 19, 2006 12:03 am

Quoting BAW716 (Reply 3):
but I have heard it was a problem at MGA and CUN

Fuel Quality here in MGA is very good. AA sends all flights to MGA with fuel to do the trips back and forth not because of the quality but because of the price (some US$3.50 a gallon). As of febraury we have only pumped some 2000 gallons, when we would have normally pumped at least 1500 gallons per flight. Cost saving at its best!
C208B
 
TACAA320
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sun Feb 19, 2006 1:49 am

Quoting AS739X (Reply 5):
Just a compressor stall.

?????????????????
'Science without religion is lame, religion without science is blind'. Albert Einstein
 
Espion007
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sun Feb 19, 2006 2:43 am

Quoting TACAA320 (Reply 8):
?????????????????

Im not sure what it is either,but sure looks like a problem. Example:


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Photo © Ruben Hofs

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Devil505x
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sun Feb 19, 2006 3:12 am

I saw a pic on "the other site". Black smoke clouds behind the engine but no fire in the picture
 
TACAA320
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RE: Emergency At SJO Of An AA 737

Sun Feb 19, 2006 3:30 am

Quoting Devil505x (Reply 10):
Black smoke clouds behind the engine but no fire in the picture

I saw both on the T.V. [local news]. They were very visible due to the position of the cameras.

[Edited 2006-02-18 19:35:05]
'Science without religion is lame, religion without science is blind'. Albert Einstein
 
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LTU932
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sun Feb 19, 2006 5:43 am

Quoting Devil505x (Reply 10):
I saw a pic on "the other site". Black smoke clouds behind the engine but no fire in the picture

The fire was probably there for a split second and maybe Tomás just missed the moment of taking a shot of the flame coming out.

In any case, the aircraft is grounded for the moment for inspection. So, if the engine is declared airworthy, then the aircraft could be ferried back to MIA for further inspection. However, if the engine needs to be replaced, then they'll have to ferry a CFM56-7 engine to SJO, so it can be replaced.
 
Checo77
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sun Feb 19, 2006 7:54 am

Is the plane still in SJO? If yes, I wil ride to the airport to catch a pic of it before the sun sets.
Thanks.
Adam
Czech Boeing lover living in Lima
 
TACAA320
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RE: Emergency Report At SJO. An AA 737 Has Problem

Sun Feb 19, 2006 8:13 am

Quoting Checo77 (Reply 13):
Is the plane still in SJO?

I bet it is. But probably by the Coopesa hangar.

[Edited 2006-02-19 00:14:12]
'Science without religion is lame, religion without science is blind'. Albert Einstein
 
MGASJO
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sun Feb 19, 2006 8:47 am

Quoting LTU932 (Reply 12):
However, if the engine needs to be replaced, then they'll have to ferry a CFM56-7 engine to SJO

Will these engine fit on a regular LD7 pallet? I tend to think it does. It would be nice to see it come out of an A300!
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sun Feb 19, 2006 9:34 am

The engine was shut down? I would assume that a compressor stall - something that should recover itself with minimal damage to the engine - would result in the crew keeping the engine at idle and monitoring it throughout the rest of the flight. Just look to G-OBME to see the result of shutting down an engine on a twin too promptly.
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LTU932
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sun Feb 19, 2006 9:51 am

Quoting MGASJO (Reply 15):
Will these engine fit on a regular LD7 pallet? I tend to think it does. It would be nice to see it come out of an A300!

It will be most likely IMO that it will be flown to SJO on the next Tradewinds Cargo 747.
 
rolfen
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RE: Emergency Report At SJO. An AA 737 Has Problem

Sun Feb 19, 2006 12:34 pm

Quoting Espion007 (Reply 9):

Im not sure what it is either,but sure looks like a problem. Example:

I remember it being discussed. It was also a compressor stall if I'm not mistaken.
rolf
 
TACAA320
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sun Feb 19, 2006 1:18 pm

Sorry but what is a compressor stall?
Is the damage caused so bad to ruin the engine?
'Science without religion is lame, religion without science is blind'. Albert Einstein
 
rolfen
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RE: Emergency Report At SJO. An AA 737 Has Problem

Sun Feb 19, 2006 2:24 pm

Quoting TACAA320 (Reply 19):
Sorry but what is a compressor stall?
Is the damage caused so bad to ruin the engine?

Quoting from wikipedia:

Quote:
A compressor stall is a situation of abnormal airflow through the compressor stage of a jet engine, causing a stall of the vanes of the compressor rotor.

...

Compressor stalls can result in one or more extremely loud bangs emanating from the engine as the combustion process "backfires". This may be accompanied by an increased exhaust gas temperature, and yawing of the aircraft in the direction of the affected engine.

The effects of a stall can vary. A minor stall may create an alarming noise but have little other effect. On the other hand, a violent compressor surge might completely destroy the engine and set it on fire.

http://en.wikipedia.org/wiki/Compressor_stall
rolf
 
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LTU932
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RE: Emergency Report At SJO. An AA 737 Has Problems.

Sun Feb 19, 2006 5:40 pm

Quoting Rolfen (Reply 18):
I remember it being discussed. It was also a compressor stall if I'm not mistaken.

A compressor stall caused by the engine having ingested a bird if I'm not mistaken. It grounded the aircraft for a few weeks, so they could check the aircraft (especially wings and engine pylons) for damage and to replace the engine. I recall that when the incident with the US 762 happened, AMS was having a problem with lots of birds in the area.