IFixPlanes

A more detailed description would be helpful.
Classic or NG?
During final approach (select LG down) or during landing roll (brake system in operation)?
Is the system pressure A and B the same?

Anyway...
737CL:
AMM 29-15-00 PB101

737NG:
FIM 29-10 TASK 807 (Fault Code 291 080 00)

vd8

It is classic but ok i will try to find by myself, thank you

IFixPlanes

What do you expect without giving details. Garbage in leads to garbage out.

low n' slow

The idea of having this thread going is great, but quite frankly, it's not very useful as long as all types are mixed like this. PPRuNe should really consider having a separate forum area (perhaps inside of techlog) with separate threads for each aircraft mentioned. That way, type specific discussions would be kept cleaner and easier to browse through.

woptb

vd8, re 737 Classic Hyd fluid transfer. A very common occurrence on the 73.In theory fluid transfer should be impossible,but a couple of leaking vlvs cause the problem. Speak to your local engs,there are two methods used on the ground to re-establish levels. If you can't get an answer,PM me & I'll dig the full info out.

redskyventures

Some more details?
Is this peculiar to the BE20 or does it affect the 90 / 1900 for example, is there something special about the system or could it potentially affect any pressurised/non pressurised aircraft? How does the error appear through the range, and is it only one ASI affected? I'm curious, sounds like a good one to try in the sim.

AvChappy

Saab 340

Rudder limiter warning coming on intermittently during cruise.

All functional tests proved serviceable several times by numerous engineers on ground. Fault was a defective Tail Cone valve not opening properly, causing ice/moisture ingress in the tail section, subsiquently affecting actuators and position pots for the rudder limiter...

olav737NG

Good evening/morning/afternoon,

could somebody tell me what a ''control column/yoke jam'' means?

Thanks in advance

Bula

Blue and Green or Blue and Yellow HYD fault light flashing on OVHD with no associated ECAM.

Cause: Associated engine oil pressure switch fault. That's right OIL pressure switch.

3holelover

Airbag uses signal from engine oil px to tell other systems when the engine is running.... So perhaps, no signal from switch meant the ptu was armed, but not running since the edp was doing just fine... hence fault light but no action required?

Uplinker

Interesting thread - only just looked at it.

Regarding PB switches not turning on/off with too brief a push: A lot of electronic circuits now incorporate "de-bounce" logic into their switching. A mechanical electric switch can obviously only be on or off, but sometimes as it is operated, the contacts can bounce, causing several on/offs to occur within microseconds of each other. This is not a problem with say a simple light or a fan, but now that many systems are computer interfaced, a rapid sequence of on/offs can totally confuse a system. Therefore, many switches use de-bounce logic which ignore rapid changes and only register longer term changes.

This is not such a problem with toggle switches, but can be with Airbus pushbutton types. My Airbus training reinforced this by telling me to make (relatively) slow , positive selections on the pushbuttons, and wait to see the integral caption light go on before releasing pressure on the switch.

Even so, I have recently had a yellow pump refuse to switch off via the push button until I tried slowly several times - think this was a fault though.



U