737 stick pusher

[lumax]

With all the talk in the last couple of days with regards to the Colgan crash, I started digging a little deeper into my 737 systems. With regards to the stall warning system I found that "the elevator feel shift (EFS) computer increases system A hydraulic pressure to the elevator feel and centering unit during a stall. This creates about 4 times the normal forward force on the yoke." The systems book does not technically call it a stick pusher even though it sure sounds like one. However, in another source I found the same description and it did call it a stick pusher.
Anyone have better info on this?

 

[Colonel Savage]

Is that Classic or NG?

 

[lumax]

That is for the NG's

 

[AWACoff]

Our manuals at CAL state that it increases to 2 times normal... Who knows which manuals are correct. No mention about it being a stick pusher. I've never even seen it demonstrated in the sim that I can recall. Our recoveries were done at the shaker.

 

[another cfii]

I recall in the sim during that maneuver, you get the shaker when you reach the PLI line, once you past it (above the PLI line), you'll get the pusher. And it's a doozy, easily you can lose 3-500 feet in a second.

 

[Singlecoil]

I have a vague memory of it being demonstrated in the sim at high altitude at the airline you and I work for, Lumax.

 

[lumax]

That is better memory than mine because I don't remember ever going beyond stick shaker. But then again I can't remember what I had for dinner last night!

 

[HalinTexas]

The shaker does quite enough to get my attention, thank you.

 

[redflyer65]

No pushers on the 737's that I know, it might be model specific though...

 

[ron burgundy]

In my airplane it is a carbon based stick pusher, activated at the onset of sphincter constriction.

 

[Floatplane]

In my airplane it is a carbon based stick pusher, activated at the onset of sphincter constriction.

That would be very similar to my aircraft, just prior to sphincter constriction, my pusher is at max capacity.

 

[njcapt]

None of the 737 series has a stick pusher. The BBJ, the -700's I flew at AirTran and the -800's I flew at ATA had an Elevator Feel Shift mechanism which used the Speed Trim to move the horizontal stab to cause a nose down movement.

 

[Whine Lover]

Correct Sir.

The system is not a "stick pusher" per se, but rather, it makes it that much more difficult ( via trim ) to apply back pressure to the control column in an approach to stall condition. ( Such as that which occured in the Colgan/BUF crash.)


YKMKR

 

[Pickle]

3 TZ warriors in one thread??

Priceless.

 

[Pickle]

Oh wait. Now it's 4.

 

[FlyinGuy]

Have you "TZ Warriors" been able to find work? Best of luck.

 

[Whine Lover]

There's PLENTY of jobs out there.

You just have to like the smell of either curry powder, fish heads, and/or raw sewage.


Sincerely,

Zhi Peng Patel

 

[ATA For Now!]

I'll make it 5.

 

[HalinTexas]

There's PLENTY of jobs out there.

You just have to like the smell of either curry powder, fish heads, and/or raw sewage.


Sincerely,

Zhi Peng Patel

Or work for "Colgan" wages.

Who, but the young and single, can afford that? I'm 43, married, with a 12 year old that I'm required to send child support to. I don't want to live with my dad. That 12 year old has basically kept me from going overseas. I'd rather watch her grow up. I briefly worked in the Carib, but that deal was killing me. I'd rather not fly for a living anymore if I have to put up with all that BS.