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Old 01-28-2019, 10:40 PM
  #3351  
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Originally Posted by 80ktsClamp View Post
We aren't. Try again. AA has self imposed limits like NW used to do.
This is the first I’m hearing about it too, and I’m based there. If it’s an airport limitation, I’d like to hear about it.

But I do agree on the dual trucks, I never worried about the 757 having stopping power, the A321 is kind of stingy when it comes to giving up her energy once the weights on the wheels.
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Old 01-29-2019, 02:15 AM
  #3352  
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Originally Posted by 80ktsClamp View Post
We aren't. Try again. AA has self imposed limits like NW used to do.


According to the 10-9 - G, P, R & U are restricted to 10kts straight and 5kts turns.
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Old 01-29-2019, 03:54 AM
  #3353  
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Originally Posted by J Fish View Post
I have heard one of the big issues when anylizing replacing the 757 with the 321 isn't range but cargo capacity. Apparently this is due to brake energy limits on the 321 due to the single truck landing gear.
If that's the case, it might change, since all comments coming from Airbus indicate that the next iteration would include composites, to lower the weight of the current aircraft.



AA has a few 321s in a 102 seat config for transcons, I wonder how profitable that is. Inevitably, the A321 is going to be a major player in crossing the Atlantic, since the alternatives are limited. The 797 doesn't have an engine yet, and the current efficient engines can't be scaled up, or down to fit it. That airplane is a long way off.
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Old 01-29-2019, 04:59 AM
  #3354  
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Originally Posted by Big E 757 View Post
This is the first I’m hearing about it too, and I’m based there. If it’s an airport limitation, I’d like to hear about it.

But I do agree on the dual trucks, I never worried about the 757 having stopping power, the A321 is kind of stingy when it comes to giving up her energy once the weights on the wheels.
The A321neo has a completely different wheel braking system than the A321ceo; the neo will not even get warm when landing in DCA, in the middle of summer, after a transcon.
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Old 01-29-2019, 05:40 AM
  #3355  
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Originally Posted by Hillbilly View Post
According to the 10-9 - G, P, R & U are restricted to 10kts straight and 5kts turns.

Is that for the 767-400? I’m curious because of how they wrote that. Two separate sentences inside the box. I think it’s for the 767-400, but one would think they would’ve have worded it differently if not. I.E. For all other aircraft, ............
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Old 01-29-2019, 06:46 AM
  #3356  
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Originally Posted by 80ktsClamp View Post
We aren't. Try again. AA has self imposed limits like NW used to do.
...another issue *might* be the taxes. Delta used to limit the weight of the MD88's to qualify for a lower tax from the Port Authority.

Almost all the E175's do this to remain within our scope limits too. The jet is certified to 89,000lbs, we limit permitted flying at 86k.

The FAA does not care, and will even issue an Airworthiness Certificate with whatever weight you desire on it, as long as it is less than the aircraft's actual certified limit.

Last edited by Bucking Bar; 01-29-2019 at 06:58 AM.
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Old 01-29-2019, 07:33 AM
  #3357  
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Originally Posted by Pogey Bait View Post
The A321neo has a completely different wheel braking system than the A321ceo; the neo will not even get warm when landing in DCA, in the middle of summer, after a transcon.
Can you elaborate a little?

Just curious as to how the system is so different given that a typical MED autobrake landing on the 321ceo gets 500+ temps within five minutes.
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Old 01-29-2019, 07:52 AM
  #3358  
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Originally Posted by contrails View Post
Can you elaborate a little?

Just curious as to how the system is so different given that a typical MED autobrake landing on the 321ceo gets 500+ temps within five minutes.
I googled it, and it looks like Safran has upgraded the brakes with an added 44% greater ventilation capacity.

https://www.safran-landing-systems.c...v_15_mid_2.pdf
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Old 01-29-2019, 09:13 AM
  #3359  
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737 brakes never get hot! Or at least you never know about it!
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Old 01-29-2019, 09:17 AM
  #3360  
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Originally Posted by m3113n1a1 View Post
737 brakes never get hot! Or at least you never know about it!
Yeah EMAS cools those puppies right down
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