aircrafttechtrng

Seen Quite A Few A320, A330 And A340 Return To Stand Due Leak Measurement Vlv Left Engaged

And that was that

A320/321

On ground HYD EDP selected to OFF to check on another matter, notice HYD system remains pressurised at 3,000PSI??? Re-cycle and check C.B, still remains pressurised.

Cause : The HYD EDP Solenoid shut off valve fails to operate and remains open!

MEL raised (C) !

When asked what does one do in flight, when HYD SYS OVHT occurs? Airbus answer, "10x-9 and that the HYD box will overheat and shear off the HYD drive mechanism, with no further damage", when pressed for more info, nothing cameback.

Therefore, didn't take MEL! 4 hour flight over water at night, problem with this particular HYD system, could only become worse in flight! don't get paid enough money to take that one !

john_tullamarine

.. which is why the MEL/PUS systems are permissions, not coercive directions. The pilot is expected to consider the facts ON THE DAY and moderate the MEL permission as appears appropriate. ie the pilot can require more restrictions up to and including not accepting the aircraft.

.. all depends on the operator being reasonable and honourable as well, of course.

low n' slow

SF34B
1)
Symptom: Overhead panel black after engaging external power after engine shutdown.

Cause: Fault in WEU

Solution: Momentarily hold "Lamps Test" in "1", this will break through the WEU glitch and allow signals through to the panel lights.

2)
Symptom: Ailerons heavy and stick at full deflection (on ground with no aerodynamic load, this is often dismissed as normal!).

Cause: May be pulleys slipping off their main bearings causing the retaining washer to become conical, in turn causing friction.

Solution: Ask tech to look at aileron pulleys and their retaining washers.

3)
Symptom: "Avionic Smoke" when powering up avionics in very cold and humid environment. (verify that there is no actual smoke or fire situation).

Cause: Humidity or frost build up in avionic smoke detector.

Solution: Start one engine, open pressure dump valve and apply maximum heating until the warning goes out, may take a few minutes.

/LnS

Tinwacker

Something to remember about these flying computers.
I have read of SWLT inputs that do not work in this forum.
Take time to positively push each switch and ensure light msg appears or clears. I have demonstrated to junior mechanics that by pushing a SWLT quickly no msg appeared then selecting again but slowly and positively the msg will appear.
When doing soft resets on the o'head panel ensure a reasonable time lag (10-15secs) before reseting not a nano sec. This is a (Ctrl/Alt/Delete) function for your computer not a c/b.
Something to remember when the cockpit goes black.....

Cosmo Beauregard

God I love Twin Otters! Smoke rolling out from the floor boards with Airconditioning on, getting passed by canadian geese in flight & Greyhound busses on the ground... The only fixed wing aircraft in the world to take off in a nose down attitude... those wacky DeHavilland guys!