Moderators: richierich, ua900, PanAm_DC10, hOMSaR

 
silverfox
Topic Author
Posts: 1086
Joined: Thu Mar 15, 2001 8:39 am

737-400 Cockpit

Fri Jun 11, 2004 6:56 am

Just watched on Discovery flightchannel prog about the 737.
The take off was being videoed!!!!!!!!!!!( and it didnt fall out of the sky)


What i would like to know is
Between the pilots about knee level there appeared to be two wheels with a white stripe on them. These were spinning away merrily . The pilots didnt say what they were

Could a pilot enlighten me please

Thanks
 
trekster
Posts: 4319
Joined: Fri Dec 26, 2003 2:47 am

RE: 737-400 Cockpit

Fri Jun 11, 2004 6:59 am

I have allways wondered what those were as well.

Spinning happily away, and i have no idea what they are
Where does the time go???
 
doug_or
Posts: 3244
Joined: Sat Mar 18, 2000 9:55 am

RE: 737-400 Cockpit

Fri Jun 11, 2004 7:03 am

trim wheels.

they are usualy operated by a switch on the yoke or through the autopilot, however a handle can be pulled out from the side and in the event of a system failure the pilots can manualy trim the aircraft (VERY hard work).
When in doubt, one B pump off
 
Jetfixer75
Posts: 29
Joined: Sun May 16, 2004 2:21 pm

RE: 737-400 Cockpit

Fri Jun 11, 2004 9:53 am

They are also kinda hard on your knees when the handle is out and someone hits the switch on the yoke..OUCH!!!
 
SlamClick
Posts: 9576
Joined: Sun Nov 23, 2003 7:09 am

RE: 737-400 Cockpit

Fri Jun 11, 2004 10:36 am

727 had them as well.

You might be able to wind a self-winding Rolex by hanging it on one of the crank handles and then hitting the trim switches on the yoke.

On the other hand the expanding metal band may stretch out to the point that the Rolex beats itself to pieces on the footrest at the bottom of the panel.

Or I might be making that up.

Last item on the runaway pitch trim checklist is to grab and hold that wheel. The idea scares a lot of pilots-in-training but it should be noted that the power has already been removed from the motor and the electric brake applied.
Happiness is not seeing another trite Ste. Maarten photo all week long.
 
mandala499
Posts: 6599
Joined: Wed Aug 29, 2001 8:47 pm

RE: 737-400 Cockpit

Fri Jun 11, 2004 6:55 pm

Aaah, the 737 trim wheel!
Yes, that handle! I've had my knees beaten into pain by them! My fault though...
That runaway trim... it's scary... Only had to do it on the sim... real flight? at the moment I can realistically say that won't have to grab that wheel on a real flight!
When losing situational awareness, pray Cumulus Granitus isn't nearby !
 
LimaFoxTango
Posts: 992
Joined: Wed Jun 16, 2004 11:33 pm

RE: 737-400 Cockpit

Fri Jun 25, 2004 12:26 pm

as said above, they are the trim wheels. i think its quite annoying to have them make "click-click-click" sound like that every time it spins. but i guess its like that for a reason. they can be seen clearly in these two pics.


View Large View Medium
Click here for bigger photo!

Photo © George Blue
View Large View Medium
Click here for bigger photo!

Photo © Juliano Damásio

You are said to be a good pilot when your take-off's equal your landings.
 
flyingbronco05
Posts: 3484
Joined: Fri May 10, 2002 11:43 am

RE: 737-400 Cockpit

Fri Jun 25, 2004 12:34 pm

There is some more information on the trim wheel here....

https://www.airliners.net/discussions/tech_ops/read.main/92158/
Never Trust Your Fuel Gauge
 
User avatar
HAWK21M
Posts: 30114
Joined: Fri Jan 05, 2001 10:05 pm

RE: 737-400 Cockpit

Sat Jun 26, 2004 3:21 am

Stablizer trim wheels.
The Handles should be used only when manually turning the wheels If not it can strike your knees hard.
Theres a small joke in Maintenance about how would you tell a Commander from a First officer when they leave the aircraft if they were not in uniform.
The Commander [Captain] limped on his right foot while the F/O limped on his left foot.
[courtesy leaving the handles out and electrically operating the Stab trim.
 Smile
regds
HAWK
I may not win often, but I damn well never lose!!! ;)
 
pilotaydin
Posts: 2100
Joined: Tue Sep 07, 2004 12:30 am

RE: 737-400 Cockpit

Mon Jan 23, 2006 4:57 am

i hate the sound that thing makes...
The only time there is too much fuel onboard, is when you're on fire!
 
2H4
Posts: 7960
Joined: Tue Oct 19, 2004 11:11 pm

RE: 737-400 Cockpit

Mon Jan 23, 2006 5:12 am




Quoting SlamClick (Reply 4):
Last item on the runaway pitch trim checklist is to grab and hold that wheel.

I remember playing the "Try to Survive" game in the -700 sim while the instructor introduced random emergencies in an attempt to kill me.

Immediately after take-off from MDW, I got a runaway nose-down trim. I found that I could stop the trim motors by holding constant nose-up trim with the yoke-mounted trim switches.

I ended up holding those switches in place for the rest of the flight while negotiating an engine fire, rudder hardovers (yes, plural), and several other malfunctions before finally winning a bet by landing it at CGX.

I've always wondered if holding the yoke-mounted trim switches would successfully stop runaway trim in the real aircraft, or if it was simply a sim glitch.




2H4


Intentionally Left Blank
 
User avatar
Starlionblue
Posts: 20485
Joined: Fri Feb 27, 2004 9:54 pm

RE: 737-400 Cockpit

Mon Jan 23, 2006 11:31 am

Quoting LimaFoxTango (Reply 6):
i think its quite annoying to have them make "click-click-click" sound like that every time it spins.

So that's where the iPod designers got their inspiration Big grin
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
User avatar
HAWK21M
Posts: 30114
Joined: Fri Jan 05, 2001 10:05 pm

RE: 737-400 Cockpit

Mon Jan 23, 2006 3:42 pm

This is one Old thread.
Any changes planned on the B739ER on the Stab trim Mechanism.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
DColeMAN
Posts: 265
Joined: Mon Nov 22, 2004 7:30 am

RE: 737-400 Cockpit

Tue Jan 24, 2006 4:29 am

Quoting Silverfox (Thread starter):
Just watched on Discovery flightchannel prog about the 737.
The take off was being videoed!!!!!!!!!!!( and it didnt fall out of the sky)

It sounds as though you're referring to the Air UK B737-400 documentary (routing LGW-AGP) on Discovery Wings?

If so, the narrator points out the trim wheels shortly after takeoff and briefly explains why they're rotating etc.

Dale
Topless Women Drink 4 Free
 
RODOL
Posts: 315
Joined: Wed Jan 26, 2005 8:45 pm

RE: 737-400 Cockpit

Wed Jan 25, 2006 4:59 am

On a video I have (ITVV Go 733 STN-LIS-STN), the captain says that the left and right trim wheels are made by different manufacturers. He doesn't say why this is the case, but there you go....more useless information!
 
User avatar
HAWK21M
Posts: 30114
Joined: Fri Jan 05, 2001 10:05 pm

RE: 737-400 Cockpit

Wed Jan 25, 2006 2:55 pm

Quoting RODOL (Reply 14):
the captain says that the left and right trim wheels are made by different manufacturers. He doesn't say why this is the case

Why would that be the case.Im sure they would be the same.
Any reason.
regds
MEL
I may not win often, but I damn well never lose!!! ;)

Who is online

Users browsing this forum: DH106, flybaurlax and 36 guests

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos