B737-300 Rudders
 

Is it correct for B737-300 Rudders to “flap in the wind”?

I saw an un-powered B737-300 on the apron, the wind was blowing from behind the aircraft and the rudder was moving, all be it slowly, back and forth, from one stop to another.
:confused:

[ 10 September 2001: Message edited by: loggerhead ]

The short answer is YES this is a normal situation for a depowered B737. When there is no power on the A/C there is no hydraulic pressure to the rudder to prevent movement. There is a damping effect of the fluid left on the lines but there is no "fluid lock" of control lock in the system.

The procedure at my company is to leave at least 1 electric "B" pump on in windy conditions to prevent such flapping. Unfortunately this is to no avail when there is no power on the A/C.

Cheers

http://indigo.ie/~owenc/starwars/images/pint1.gif

thank you.

i would park the aircraft so the wind wasn't blowing from behind. if you park the aircraft into a headwind it prevents stress of the control surfaces and it would stop the rudder "flapping"

[ 11 September 2001: Message edited by: pohlcatt ]

Canuck,

"...at least 1 electric "B" pump on..."

Just how many flamin electric B pumps you got on your FLUFs? :confused:

Pohl,

So you have a choice where and how to park your 737? You must be working in a quiet and relaxed part of the world. Are there any vacancies out there.

Sq

Slasher:

Our T. Rexs (Truckasaurus Rex) have 2 electric "B" pumps and 2 engine driven "A" pumps. These are B737-200s. I know the 737-700s we are getting have a different setup but since i am not flying one yet I am not sure.

Cheers

True, We do have a limited amount of space here at LTN with EZY around.

Thanks for that Guys... ;)