self test for pitot static system?
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self test for pitot static system?
A LH Cargo 772 recently took off with the two main static port lines not connected after maintenance. Clogged, capped or frozen Pitot tubes have caused air plain crashes.
Is there no self testing system commercially available or has been proposed that would detect major leaks, unconnected lines or closed ports to the outside world?
https://www.bfu-web.de/EN/Publicatio...ublicationFile
Is there no self testing system commercially available or has been proposed that would detect major leaks, unconnected lines or closed ports to the outside world?
https://www.bfu-web.de/EN/Publicatio...ublicationFile
Join Date: Mar 2011
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That’s pretty sad. Some engineers signed off the work as completed, when it obviously was not. Could have cost lives, as it was it did cost the price of all that fuel they dumped.
Join Date: Dec 2020
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A LH Cargo 772 recently took off with the two main static port lines not connected after maintenance. Clogged, capped or frozen Pitot tubes have caused air plain crashes.
Is there no self testing system commercially available or has been proposed that would detect major leaks, unconnected lines or closed ports to the outside world?
Is there no self testing system commercially available or has been proposed that would detect major leaks, unconnected lines or closed ports to the outside world?
Join Date: Dec 2020
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A pitot static system is a physcial thing. It needs an external test device to prove it. That needs a competent person to do the test. I would never operate a Drunk test set without the training. B1.1 . Not passed the levels of knowledge to be proved as competent.
Join Date: Dec 2012
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They avoid that issue nowadays by placing a sensor directly into the Port. Wether it is Pitot or Static. This eliminiates long lines of Pressurehose which could be a problem. And yes, one could do really high damage to costly Equipment. So this Problem will "phase itself out" and become an electrical problem. But at least one easier diagnosable. Avionics guy here.
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For my part I was more astonished that the indepenent check of work being done to System L and R would not involve any tests to System L and R but to the backup System C. But I have to concede - it did the job, they had one set of working clocks.
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Per AMM, leak test of the pitot-static system is not required after flushing the system if quick disconnects are removed and reinstalled.
Having said that, does not exonerate.
cod
Having said that, does not exonerate.
cod
Now, how are we going to verify that the system has returned to normal? E.G. all the valves that were installed have returned to normal state?
And it would have to be certified/configurated/tested that the system would not operate in flight.
What about a short taxi and the test is not complete, a take off warning horn when power is applied?
And even if the pressure would blow off the tape/obstruction, there is no easy why to verify it is all gone, which means errors that are unknown.
I'm pretty sure no operator wants to add this complexity to a "simple" system.
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No it doesn't. Some one also fitted a panel over those ADMs and didn't do a proper clear to fit.
