capterdi
Posts: 15
Joined: Sun Oct 26, 2003 10:12 am

Airbus A300 Aborted Takeoff.

Wed May 24, 2006 11:04 pm

A friend told me what happened to him in his most recent trip. He is a frequent traveler and also likes planes and all related issues.
The plane was already lined up for takeoff, the pilot went to full throttle, previous to releasing the brakes and starting to roll down the runway, but then suddenly the engines went to idle again. Next, the pilot announced to the passengers that they were not having enough thrust for takeoff, but this was only to be a small delay. So they pulled the plane apart , in order to free the runway for the waiting airplanes. My friend had an aisle seat, and it was dark outside, so he could not see exactly what operations went on. But he says that a maintenance truck or some sort of truck came close to the airplane, that by the way never shut the engines down. He tells me that a hose was connected, he is not sure if to a wing or to an engine. Then he could hear the engines coming up to life again, but also he could notice a strange noise: as if one of the engines could not rev up fully, a sound began to increase pitch and then decrease pitch, increase, decrease, etc. until suddenly the engine sort of got rid of something, and so could go to full revs and sustain them. Then the hose was disconnected, the truck went away, and in a matter of minutes the plane took off.

What was possible wrong? What activities did the floor personnel perform in order to correct the problem?
 
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Starlionblue
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RE: Airbus A300 Aborted Takeoff.

Wed May 24, 2006 11:53 pm

Your description makes it sound like a ground start car was connected to start up one of the engines. Why this happened i have no idea.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
capterdi
Posts: 15
Joined: Sun Oct 26, 2003 10:12 am

RE: Airbus A300 Aborted Takeoff.

Thu May 25, 2006 12:37 am

Starlionblue,

Thank you for your comment. Sounds reasonable. But then, if the plane seemed to be ready for takeoff, can it be that one of the engines suddenly died, and the crew could not restart it from the cockpit?
 
knoxibus
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RE: Airbus A300 Aborted Takeoff.

Thu May 25, 2006 12:54 am

I remember that when I was working on the ramp in RUN, one 747 from AF had to have one of its engine started while the three others were running (basically prior to taxiing) because of a special valve that had to be manually opened through a rod, by plugging it to the pylon.

So one of our crew took one of those flat bed trucks with telescopic capabilities (like the one used to remove seat rows) and while being connected to the service interphone with the cockpit, he was basically starting the engine all by himself.

I think the starter was dead and we needed bleed (pneumatic) from the other engines or the APU to get it started.
No matter what anybody tells you, words and ideas can change the world.
 
113312
Posts: 583
Joined: Sat Apr 16, 2005 9:09 am

RE: Airbus A300 Aborted Takeoff.

Thu May 25, 2006 1:09 am

Could have been a stuck surge bleed valve.
 
Matt72033
Posts: 1589
Joined: Sat May 14, 2005 10:03 pm

RE: Airbus A300 Aborted Takeoff.

Thu May 25, 2006 2:40 am

Quoting Knoxibus (Reply 3):
I remember that when I was working on the ramp in RUN, one 747 from AF had to have one of its engine started while the three others were running (basically prior to taxiing) because of a special valve that had to be manually opened through a rod, by plugging it to the pylon.

the usual problem is a dodgy start valve, wont let air to the starter! but you stick a handle in the base of the engine to open that, not the pylon!

Quoting Starlionblue (Reply 1):
Your description makes it sound like a ground start car was connected to start up one of the engines. Why this happened i have no idea.

as for the original post, you wouldnt need an airstart if the engines were already running! even if only one engine was running you can cross bleed to start the other, no need for an airstart.....all seems a bit strange to me

Quoting Capterdi (Reply 2):
Thank you for your comment. Sounds reasonable. But then, if the plane seemed to be ready for takeoff, can it be that one of the engines suddenly died, and the crew could not restart it from the cockpit?

if it died and couldnt be restarted from the flight deck.....which it should be able to.......i dont think id be to inclined to just get it started again and be on my way! how do you know it wont happen again!

all seems a bit strange!
 
capterdi
Posts: 15
Joined: Sun Oct 26, 2003 10:12 am

RE: Airbus A300 Aborted Takeoff.

Thu May 25, 2006 2:45 am

Matt72033,

This happened at Mexico City airport....
 
Matt72033
Posts: 1589
Joined: Sat May 14, 2005 10:03 pm

RE: Airbus A300 Aborted Takeoff.

Thu May 25, 2006 2:49 am

Quoting Capterdi (Reply 6):
This happened at Mexico City airport....

that shouldnt reaaaly matter!
 
fr8mech
Posts: 6623
Joined: Mon Sep 26, 2005 9:00 am

RE: Airbus A300 Aborted Takeoff.

Thu May 25, 2006 3:02 am

Quoting Knoxibus (Reply 3):
So one of our crew took one of those flat bed trucks with telescopic capabilities (like the one used to remove seat rows) and while being connected to the service interphone with the cockpit, he was basically starting the engine all by himself.

That would be a pylon valve failure. The tech didn't start the engine by himself. The flight crew started it after the pylon valve was opened by the tech.
When seconds count...the police are minutes away.
 
AR385
Posts: 6742
Joined: Fri Nov 07, 2003 8:25 am

RE: Airbus A300 Aborted Takeoff.

Thu May 25, 2006 3:52 am

What airline aside form AA uses an A-300 at MEX?
 
capterdi
Posts: 15
Joined: Sun Oct 26, 2003 10:12 am

RE: Airbus A300 Aborted Takeoff.

Thu May 25, 2006 1:18 pm

I know Mexicana uses A-318/319/320.
 
AR385
Posts: 6742
Joined: Fri Nov 07, 2003 8:25 am

RE: Airbus A300 Aborted Takeoff.

Thu May 25, 2006 4:01 pm

Quoting Capterdi (Reply 10):
I know Mexicana uses A-318/319/320.

I now but the thread starter specifically mention an A-300
 
VC-10
Posts: 3546
Joined: Tue Oct 26, 1999 11:34 am

RE: Airbus A300 Aborted Takeoff.

Thu May 25, 2006 4:32 pm

Quoting Matt72033 (Reply 5):
the usual problem is a dodgy start valve, wont let air to the starter! but you stick a handle in the base of the engine to open that, not the pylon!

The Bleed vlv (or Pylon Vlv in 747 parlance) may have to have been manually opened.

The whole incicdent is difficult to diagnose from the info given in the thread starter
 
Celticmanx
Posts: 94
Joined: Sun Apr 01, 2001 5:06 am

RE: Airbus A300 Aborted Takeoff.

Wed Jun 07, 2006 1:17 am

Quoting AR385 (Reply 9):
What airline aside form AA uses an A-300 at MEX?

Aero Union

A300-B4

But they are a Cargo company so it does not apply to this case.

Manx

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