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-   -   Envoy AA4125 Slides off ORD Runway Video (https://www.airlinepilotforums.com/envoy-airlines/125327-envoy-aa4125-slides-off-ord-runway-video.html)

pangolin 11-13-2019 12:46 PM
Originally Posted by black cat (Post 2923038)
For the high speed taxiway debate:
To me at that location and the speed they had it sure looks unintentional.

But seriously 11-13-2019 12:49 PM
Originally Posted by pitchattitude (Post 2923081)
Because the construction workers need jobs in Chicago.

Give them a few years and they will be tearing up and building again.
Sarcasm aside...

A million years ago, when they started moving towards the parallel runway scheme, there was an informational pamphlet they put out.

They said they’d looked at historical data and found an average of some low number of days (10-15 I think) that had sustained Xwinds that exceeded most A/C limitations. It sounded suspicious, but they claimed to have numbers.

pangolin 11-13-2019 01:00 PM
Originally Posted by But seriously (Post 2923143)
Sarcasm aside...

A million years ago, when they started moving towards the parallel runway scheme, there was an informational pamphlet they put out.

They said they’d looked at historical data and found an average of some low number of days (10-15 I think) that had sustained Xwinds that exceeded most A/C limitations. It sounded suspicious, but they claimed to have numbers.
Yes but ..... climate change.

CLE to IAH 11-13-2019 01:10 PM
Originally Posted by pangolin (Post 2923153)
Yes but ..... climate change.
Oh FFS. :rolleyes:

DownInPetaluma 11-13-2019 02:08 PM
Originally Posted by CousinEddie (Post 2923058)
Does the 145 FM directly address reverse thrust usage when the airplane starts weathervaning on a contaminated / slippery runway?
It’s jet flying in general.

CousinEddie 11-13-2019 02:45 PM
Originally Posted by DownInPetaluma (Post 2923212)
It’s jet flying in general.
Right but a T-tail with aft mounted engines tends to exacerbate the problem more as a rudder blanking issue. The Delta MD-88 at LGA 4 years ago comes to mind. The AA MD-80 way back at LIT was another. I wondered what the 145 manual says about it and if there were additional limitations directed for such conditions.

https://www.skybrary.aero/index.php/...rdia_USA,_2015

TikkleMe 11-13-2019 03:24 PM
Originally Posted by Excargodog (Post 2922904)
Quote:
Originally Posted by pangolin View Post
Are you saying the left turn was unintentional? It wasn’t a high speed exit?

And yet they collapsed their RIGHT gear in the dirt, but not the LEFT? When they departed the runway to the left?
An attempt to turn left with the undesirable [yet expected] skid to the right.

Bodies in motion and all that.

dera 11-13-2019 03:30 PM
Originally Posted by TikkleMe (Post 2923274)
An attempt to turn left with the undesirable [yet expected] skid to the right.

Bodies in motion and all that.
I seriously doubt they tried to make that exit.

pitchattitude 11-13-2019 05:01 PM
Originally Posted by But seriously (Post 2923143)
Sarcasm aside...

A million years ago, when they started moving towards the parallel runway scheme, there was an informational pamphlet they put out.

They said they’d looked at historical data and found an average of some low number of days (10-15 I think) that had sustained Xwinds that exceeded most A/C limitations. It sounded suspicious, but they claimed to have numbers.
Probably true. But it doesn’t take much to exceed cross wind limitations when the runway condition is less than ideal. And Chicago does get a lot more of those days.

highfarfast 11-13-2019 07:13 PM
Originally Posted by CousinEddie (Post 2923058)
Does the 145 FM directly address reverse thrust usage when the airplane starts weathervaning on a contaminated / slippery runway?
It is addressed. Been brushing up on my cold weather stuff lately and I do remember reading about it.


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