Wind shear, pull up, pull up

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Jun 12, 2006 | 7:40 am

#16

ORDflyr

Join Date: Jan 2006

Location: Colorado Springs, Zurich

Programs: UA G

Posts: 426

Quote:

Originally Posted by Kurt

I think 777s would be no problem at COS. UA used to fly DC-10s in there. Since the fuel load for departure up to DEN would be minimal I'm sure a 777 could do a good imitation of a rocket on takeoff!

That would be cool, but it's a little hard to do a rocket imitation at 6187' MSL during summer heat! Those high elevations really extend the takeoff and reduce engine power.

However with 13,000' & 11,000' runways it should not be a problem getting out of there.

http://www.airnav.com/airport/KCOS

Jun 12, 2006 | 11:52 am

#17

winkydink

Join Date: Apr 2003

Location: RDM

Programs: UA General Member

Posts: 1,247

Quote:

Originally Posted by CVO 1K 2 Million

More than a few times while boarding I've heard the recording:
wind shear, wind shear, pull up, pull up

Have you considered trying Beano?

Jun 12, 2006 | 12:06 pm

#18

ironmanjt

Join Date: Mar 2003

Location: anywhere and everywhere

Programs: United Nations 193, UA GS, AS MVP 100K, DL Diamond, Marriot Lifetime Titanium, AmEx Centurion

Posts: 6,362

Quote:

Originally Posted by mogulskiir

I flew through DEN yesterday afternoon and we had some real bad turbulence. It was the first time I had ever heard planes reporting severe turbulence on CH 9 before. The pilot asked just before landing if there were any reports of wind shear. On my connecting flight we had to go way out of the way to avoid the weather. I heard it was just as bad today also. My friends flight got diverted to COS.

Yeah, last night was pretty ugly. Came in from PHX around 5:30pm, and we did a few circles before being one of the first to come down. Not too bad for us, but I did hear two other flights request emergency diversions to COS.

Of course, it was all for naught, since we spent over an hour on the ground because our DEN-BWI pilot turned down 3-4 slots from the tower because he wasn't comfortable with conditions. He wasn't the only one - and I'll take safe over sorry any day.

Jun 12, 2006 | 1:50 pm

#19

Beerman92

Join Date: Nov 2005

Location: SFO and OAK

Programs: FAF, Hyatt <>, SPG PLT

Posts: 2,240

Quote:

Originally Posted by UnitedSkies

I take back what I said - there is a computerized windshear system, now that I think about it, but I don't think "pull up" is part of the warning. I think the warning is just "wind shear, wind shear."

I hate hearing that warning.

I usually look up in a panic since once I get on the plane I can hardly tell if I'm on the ground or in the air.

Jun 12, 2006 | 2:04 pm

#20

12172003

Join Date: Feb 2006

Location: SFO

Programs: UA1P

Posts: 614

Quote:

Originally Posted by Beerman92

I hate hearing that warning.

That's why it is called .....ing Betty.

Just like the autopilot being know as George or Otto (like it Auto).

We should augment some of our other names such as matron. Can't think of any now but that is a good thing as I'm sure when I do I'll be dropped from Mileage Plus. ;-)

Jun 12, 2006 | 3:01 pm

#21

MileageAddict

Original Member, Moderator: Hotel Deals and MilesBuzz

Join Date: May 1998

Location: Washington, DC

Posts: 14,291

Quasi-related to this thread...

Whenever I fly on a CRJ, I always hear two loud consecutive chirps from the flight deck (I sit in the first row) about 30 seconds before landing. Anyone have an explanation? Just curious...

Jun 12, 2006 | 3:04 pm

#22

ORDflyr

Join Date: Jan 2006

Location: Colorado Springs, Zurich

Programs: UA G

Posts: 426

Quote:

Originally Posted by MileageAddict

Whenever I fly on a CRJ, I always hear two loud consecutive chirps from the flight deck (I sit in the first row) about 30 seconds before landing. Anyone have an explanation? Just curious...

Probably ground proximity warning from the radar altimeter.

Jun 12, 2006 | 3:13 pm

#23

DTW-HomeyFour

Join Date: Mar 2006

Location: DTW

Programs: DL Silver Medallion

Posts: 613

Quote:

Originally Posted by sbagdon

Believe the MD-88s have a bunch of those verbal warnings (including shaker-sticks?). It's interesting being in F, and hearing the stall warning go off a few times, seconds before wheels-down...

Steve B.

(Totally OT) Funny you say that. I was in 1B today (NW 1101 DC-93). I love watching and listening to the crew do the preflights. Woop woop, pull up! is probably my favorite. The NW Diesel 9s also have stick shakers, you can sometimes here this weird ticking sound coming from the flight deck before they button her up. Also I appreciate the woop woops that somehow make it into the PA system when the start the engines on the -9s.

Jun 12, 2006 | 3:18 pm

#24

ncorman

Original Member

Join Date: May 1998

Location: Colorado

Posts: 2,204

Quote:

Originally Posted by GroundStop

Out of curiosity, what type of planes is COS rated to handle? Can it take a 777? (I think Speedbird 219 was diverted there this evening (according to Flytecomm...will find out in the morning when I see my colleague who was on that flight))

The BA flight was still at Denver last evening around midnight. The runway there is 13000 feet and with a light aircraft due to low fuel it wouldn't have been a problem.

Jun 12, 2006 | 3:20 pm

#25

ncorman

Original Member

Join Date: May 1998

Location: Colorado

Posts: 2,204

Quote:

Originally Posted by MileageAddict

Auto-pilot being turned off. The CRJ and Airbus have a similiar tone when it is disengaged.

Jun 12, 2006 | 4:20 pm

#26

12172003

Join Date: Feb 2006

Location: SFO

Programs: UA1P

Posts: 614

Quote:

Originally Posted by ncorman

Auto-pilot being turned off. The CRJ and Airbus have a similiar tone when it is disengaged.

My friend told me that UA does almost all approaches by hand rather than doing AP-coupled-approaches (obviously not including CAT II and CAT III). So it could be anumber of things including AGPWS, landing gear set/locked/confirmed reminder, radar altimeter passing through ? AGL feet. Heck, even the C182 my friend flew (I was safety pilot) had a whoop when passing through 500 feet. Not sure what that was linked to though and forgot to ask him. Maybe it was the FA call button requesting another root beer.

Jun 12, 2006 | 5:22 pm

#27

us2

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Join Date: May 2001

Location: Southern California/In the air

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Posts: 10,380

Quote:

Originally Posted by UnitedSkies

deleted as a double post.

Last edited by us2; Jun 12, 2006 at 5:32 pm

Jun 12, 2006 | 5:31 pm

#28

us2

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Location: Southern California/In the air

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Posts: 10,380

Quote:

Originally Posted by UnitedSkies

This is correct. The sink rate warning does give the "pull up" command, but windshear does not. The reason is that the proper response to a windshear alert is the application of thrust to avoid a stall; entering a microburst, you get an increase in airspeed followed by a decrease in airspeed upon exiting. The natural response to the airspeed increase is a decrease in thrust, which is what causes the stall upon exiting. Pulling up without increasing power exascerbates the airspeed decrease. A relatively readable NASA description of the phenomena is here: http://oea.larc.nasa.gov/PAIS/Windshear.html

Jun 12, 2006 | 5:35 pm

#29

ncorman

Original Member

Join Date: May 1998

Location: Colorado

Posts: 2,204

Quote:

Originally Posted by 12172003

But does UA fly CRJ's? Last time I checked they do not fly them, and the operators of these aircraft may have different operating procedures. Altitude warnings are usually voice so you know which altitude you are passing through from as how would you know the difference between 500 AGL versus your Mininums callout by tone.