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QF 448 MEL-SYD Pan Call Antiskid inop 19/4

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QF 448 MEL-SYD Pan Call Antiskid inop 19/4

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Old 22nd Apr 2012, 13:18
  #41 (permalink)  
 
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Touch Down
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Old 22nd Apr 2012, 22:38
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TD protection has been a safety feature on the brake system of jetliners for a long time. That contraction for touch down protection is in such common use that............

Short_Circuit's post about losing TD protection once anti-skid is not available really exposed something BIG. Hints anyone?
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Old 22nd Apr 2012, 23:24
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On a Boeing "Touchdown protection" prevents the brakes being applied, until wheel spin up to within a few knots of IRU ground speed, by using the Anti Skid system.
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Old 23rd Apr 2012, 02:09
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Kinte, I too am wondering about the credentials of the guys who had trouble understanding what TD protection is.

Pprune is sure a strange place with all kinds of actors.
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Old 23rd Apr 2012, 08:37
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Maybe these "actors" fly something other than a Boeing?
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Old 23rd Apr 2012, 10:27
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Short_Circuit's post about losing TD protection once anti-skid is not available really exposed something BIG. Hints anyone?
If you land with your feet on the brakes, you'll probably blow the tyres?

I'll need some more hints maybe!
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Old 23rd Apr 2012, 11:11
  #47 (permalink)  
 
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Your need for hints is something I can't fathom but I know you are and
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Old 23rd Apr 2012, 22:45
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I remember a few years back - a 737 was dispatched anti-skid inop. The DDG indicated to use maximum manual braking.

If my memory serves me correctly - The 737 landed on 25 in Sydney. It had stopped by Charlie taxiway. I am not sure how long the tyres lasted before it was towed.


(The DDG obviously had an error in it which was subsequently amended!!)

Last edited by blueloo; 24th Apr 2012 at 08:41. Reason: Fixed, so that the Spelling nazis can move on to someone else.....
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Old 23rd Apr 2012, 23:59
  #49 (permalink)  
 
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On the A330, if I remember right with anti-skid off we had to limit brake pressure to 1000 psi. Quite hard to do so in short bumpy runways .
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Old 24th Apr 2012, 08:17
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I remember a few years back - a 737 was dispatched anti-skid inop. The DDG indicated to use maximum manual breaking.
They were told to apply 'breaking' so they broke it! 'Braking' may have been the intention.
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Old 24th Apr 2012, 08:39
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Indeed. Well spotted.
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Old 24th Apr 2012, 11:12
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They were told to apply 'breaking' so they broke it! 'Braking' may have been the intention.
I believe the PF (capt) was the one who took this instruction literally
maximum manual braking.
, I'll assume you mean both of his feet and not the PNF.
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Old 29th Apr 2012, 05:21
  #53 (permalink)  
 
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A few years back I flew regularly with an FO who counted English as a second or third language. His approach briefing often included his intention to make "a short field landing with maximum breakage..." Fortunately he never succeeded.....
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Old 29th Apr 2012, 12:00
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Not sure what happened to my previous post but the question was why would you not declare a PAN if you thought that you had a blown tyre and that it might cause landing difficulties?
This thread is questioning why would you declare a PAN if the antiskid went inop, today a QF aircraft did not declare a PAN when they thought they had tyre problems but wanted the emergency services on standby(which automatically happens if you declare a PAN). Its irrelevant which airline it is but what would be the reason in not declaring a PAN if you think there might be landing problems and you want emergency services?

Is it the media interest or is it a fear of Flt Ops giving you a bollocking in this world of Just Culture?
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Old 29th Apr 2012, 21:32
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Smile

The posts were removed because this thread is about a different flight, different situation.
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Old 29th Apr 2012, 23:54
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Your call boss but the original post was about why was a PAN call made, I was trying to generate discussion on why a PAN call was not made. No problems I will just start a different thread.
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