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BBC: Brazil jet thrust reverser 'off' ( No wonder he was speeding down the runway)
BBC ^ | Friday, 20 July 2007, 09:31 GMT 10:31 UK | BBC Staff

Posted on 07/20/2007 10:28:41 AM PDT by Ernest_at_the_Beach

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To: Red Badger

They are not hard to find, when they are just off the runway. Besides they “try” to tell searchers where they are.

Much harder when they are under water, or in a dense jungle, etc.


21 posted on 07/20/2007 11:21:30 AM PDT by 3niner (War is one game where the home team always loses.)
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To: Ernest_at_the_Beach

What is the procedure for a touch and go? If the pilot didn’t think he would be able to stop, he could have taken off again. You sure don’t want RT for that.


22 posted on 07/20/2007 11:21:32 AM PDT by Niteranger68 (Stick to talking about your own candidate. We’re smart enough to figure out the rest on our own.)
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To: Spktyr

Possibly. Can’t tell from the info we’ve got here.


23 posted on 07/20/2007 11:27:11 AM PDT by DuncanWaring (The Lord uses the good ones; the bad ones use the Lord.)
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To: Ernest_at_the_Beach

Could the pilot have taken off again during the landing, as in the film “Air Force One”?


24 posted on 07/20/2007 11:27:18 AM PDT by montag813
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To: Ernest_at_the_Beach
Brazilian President Luis Inacio Lula da Silva, who has been criticised
by opponents for his low profile since the crash,


Speaking of low profiles...
Where's the Airbus comment on this crash?

If anyone has seen a printed comment by Airbus or their parent organization,
please do post.

My AMATEUR thought is that either AIRBUS manual writers/translators
made a goof...
OR the TAM maintanence folks misinterpreted the manuals and/or
failed to realize the "check malfunctioning reverse thrusters
within 10 days" could mean disaster at a short runway like Congonhalas.
25 posted on 07/20/2007 11:28:47 AM PDT by VOA
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To: RacerF150
If the pilot didn’t think he would be able to stop, he could have taken off again.

If he'd made that realization/decision soon enough to get back to flying airspeed before the end of the runway.

DAMHIK.

26 posted on 07/20/2007 11:28:59 AM PDT by DuncanWaring (The Lord uses the good ones; the bad ones use the Lord.)
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To: montag813
Could the pilot have taken off again during the landing,...

He could if he made the go-around decision early enough to get to flying airspeed before he got to the end of the runway.

27 posted on 07/20/2007 11:32:43 AM PDT by DuncanWaring (The Lord uses the good ones; the bad ones use the Lord.)
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To: Spktyr

With one, at least he would have crashed on the airport. The turning moment from one TR on a wing-mounted engine would be hard to overcome.


28 posted on 07/20/2007 11:32:48 AM PDT by JRjr (hMMM?)
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To: RacerF150

On the A320, there’s a special “touch-and-go” mode that you engage - and pray. :-P


29 posted on 07/20/2007 11:38:42 AM PDT by Spktyr (Overwhelmingly superior firepower and the willingness to use it is the only proven peace solution.)
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To: JRjr

Ran this past a commercial pilot and his opinion: Hard opposite rudder, pull the the other engine back to idle or shut it down entirely. Difficult, but by no means impossible. He’d had to do it on a 737 when one TR decided to quit on rollout.


30 posted on 07/20/2007 11:43:22 AM PDT by Spktyr (Overwhelmingly superior firepower and the willingness to use it is the only proven peace solution.)
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To: Spktyr
On the A320, there’s a special “touch-and-go” mode that you engage - and pray. :-P

With Airbus, don't you have to pray first?

31 posted on 07/20/2007 11:53:39 AM PDT by Niteranger68 (Stick to talking about your own candidate. We’re smart enough to figure out the rest on our own.)
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To: RacerF150

Coming from France,...it’s a secular airplane,...no prayers allowed.....LOL1


32 posted on 07/20/2007 11:57:53 AM PDT by Ernest_at_the_Beach (No Burkas for my grandaughters!!!)
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To: All

The thrust reversers do not actually help all that much. Maybe 5% of the braking force in the dry, maybe 10% in the wet and more on snow/ice. The brakes always do the majority of the stopping.

It’s common not to even use the reversers anymore because of the risk of FOD and maintenance concerns.

Lack of reversers should not have been a problem.


33 posted on 07/20/2007 12:06:57 PM PDT by ltc8k6
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To: CarrotAndStick

Good post. As you stated, reverse thrust is most effective at higher speeds. Usually, you start reducing reverser use at 100 kts, with reversers stowed around 80 kts (94mph). In a two engine aircraft, you have to be very careful using reverse thrust with a reverser deactived as you may have control problems due to the asymetrical thrust, and limits on nose wheel steering to counteract the inevitable move towards the edge of the runway.
The problem here is that the pilot tried to land a somewhat heavy aircraft on a relativly short WET runway with no reverse thrust. Aircraft braking on a wet runway can be marginal due to hydroplaning, and with no reverse, you only have brakes to stop the aircraft. You can apply all the braking you want, but you are just along for the ride—a very uncomfortable feeling.


34 posted on 07/20/2007 12:27:22 PM PDT by ab01
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To: Ernest_at_the_Beach

If he was trying to execute a go-around, then having the thrust-reversers off would be the correct action.


35 posted on 07/20/2007 12:32:01 PM PDT by expatpat
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To: Gay State Conservative

It is not crazy. The plane should be ready to make a go-around/touch and go in case of a need, and the thrust reversers should be off for that reason.


36 posted on 07/20/2007 12:33:42 PM PDT by expatpat
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To: Ernest_at_the_Beach; microgood; liberallarry; cmsgop; shaggy eel; RayChuang88; Larry Lucido; ...

That picture looks like it's showing the nose and cockpit of the plane. It must have been horrific to be on board.

If you want on or off this aerospace ping list, please contact Paleo Conservative or phantomworker by Freep mail.


37 posted on 07/20/2007 2:02:50 PM PDT by Paleo Conservative
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To: Paleo Conservative

Good grief. Was he drunk?


38 posted on 07/20/2007 2:03:25 PM PDT by pissant (Duncan Hunter: Warrior, Statesman, Conservative)
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To: Paleo Conservative

Aren’t aircraft interiors supposed to be nominally flame-retardent?


39 posted on 07/20/2007 2:24:41 PM PDT by DuncanWaring (The Lord uses the good ones; the bad ones use the Lord.)
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Comment #40 Removed by Moderator


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