PPRuNe Forums - View Single Post - AF447 final crew conversation - Thread No. 2
Old 2nd Mar 2012, 19:38
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A33Zab
 
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@RR_NDB

if you apply maximum available power, ("open loop condition") no delay at all
You will locally heat-treat the neighboring skin with insufficient cooling.

I don't have exact data for the probe, but AOA operating temp is 120 ºC,
suppose this will be the same for the probe.
---

Don't have sleepless nights about the probes anymore.
The affected thales probes are obsolute and replaced by other probes per AD 2009-0195.

After 07 January 2010, do not install a Thales Avionics P/N
C16195AA pitot probe at any position on an aircraft.




System is automatic, on ground 115V to the Low side if 1 engine is in run state.
115V is applied to the Normal side in Flight.
Manual switch (from AUTO to ON) bypasses the Engine Run & Flight logic.
Temp controlled by the probe itself, the PHC contains the switching logic and monitoring circuits.




Last edited by A33Zab; 2nd Mar 2012 at 20:07.
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