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Air Traffic Monitoring => Aviation Audio Clips => Topic started by: DTAK on February 01, 2006, 11:58:15 AM

Title: KSEA Puzzling Turbulance
Post by: DTAK on February 01, 2006, 11:58:15 AM
The controller is becoming a favorite of mine at SEA.  He seems to have switched to days this week, and in good form this morning (Wednesday 2/1).

He has a unique "cleared to land" call.

This morning, looking out the window, he spots a potential problem.
Title: KSEA Puzzling Turbulance
Post by: Tomato on February 01, 2006, 01:35:53 PM
Pilot-induced turbulence?  ...do I even want to know what that means?!  :shock:

Nice clip though!  :)
Title: KSEA Puzzling Turbulance
Post by: Jason on February 01, 2006, 01:41:12 PM
Quote from: Tomato
Pilot-induced turbulence?  ...do I even want to know what that means?!  :shock:

Nice clip though!  :)


One of the two pilots flew the aircraft using quick, abrupt control inputs which looked like the plane was going through turbulence.

Pilot-induced turbulence IOW means: Pilot controlled the airplane with sharp control movements and the control pressures used created turbulance due to those inputs.

Awesome clip!  Haven't heard something like this in a while.  ...controller also sounds like he's on the ball.

Jason

P.S. Pilot-induced turbulence in the case it was used in this clip was kind of a joke as well.  The ATCT thought the plane was going through some sort of turbulance, but the pilot admitted it was basically their fault. <g>
Title: KSEA Puzzling Turbulance
Post by: Tomato on February 01, 2006, 01:44:14 PM
Got it!  ...and yeah, I kinda understood the joke-part of it.  I'm curious though, is there a situation where pilots usually perform these quick movements?
Title: KSEA Puzzling Turbulance
Post by: Jason on February 01, 2006, 01:50:13 PM
Quote from: Tomato
Got it!  ...and yeah, I kinda understood the joke-part of it.  I'm curious though, is there a situation where pilots usually perform these quick movements?


IMO: It's the result of poor airmanship, but 20 other people will give you 20 other answers/opinions.  In some cases though it could be a result of wind shear or wake turbulence, but pilot-induced turbulence generally means that the turbulence is being felt due to pilot input.

There is no situation IMO that would require a pilot to create their own induced turbulance.  It's usually a result of abrupt rudder and alieron/elevator controls.

Jason
Title: KSEA Puzzling Turbulance
Post by: Jolly009 on February 01, 2006, 01:53:15 PM
Well in Seattle...  I can only think of Big Buildings, Birds, and the abrupt eruption of Mt. Rainier or St. Helens... and well, he might of had one too many in the O club....  :-) (JOKING ONLY)
Title: Pilot-induced tb
Post by: frantzy on February 04, 2006, 09:11:07 PM
Quote from: Jason
Quote from: Tomato

There is no situation IMO that would require a pilot to create their own induced turbulance.  It's usually a result of abrupt rudder and alieron/elevator controls.


I can think of another scenario:  practicing steep turns, I always knew I did a good one when, at the end of the 360-degree turn, I ran into my own wake turbulence.
Title: Re: Pilot-induced tb
Post by: Jason on February 04, 2006, 09:28:32 PM
Quote from: frantzy
I can think of another scenario:  practicing steep turns, I always knew I did a good one when, at the end of the 360-degree turn, I ran into my own wake turbulence.


That's definitely a great example of a situation, and I have experienced that before as well.  The point I was making was intended for larger, heavier, less menueverable aircraft and I should have also included that I was talking about an approach-to-land scenerio.  I haven't done steep turns on final and I sure would't recommend it  at such a low altitude<g>  :wink: .

Thanks for bringing up an interesting point....I didn't think about that one! :lol:

Jason
Title: Re: Pilot-induced tb
Post by: frantzy on February 05, 2006, 12:07:59 AM
Quote from: Jason
The point I was making was intended for larger, heavier, less menueverable aircraft and I should have also included that I was talking about an approach-to-land scenerio.


Your main point was certainly correct, Jason, I was just joking around...

Mike