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PTU OFF - Still Barking


ozgulkagan

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Hello All. 

 

I switched PTU to off just to test. Started Engine 2, stabilised. Then started Engine 1 and PTU barking can be heard.

 

Is that normal behaviour?

 

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FCOM states:

OFF - When OFF is selected, then both green and yellow PTU electro-hydraulic valves are energized and closed, and hydraulic power transfer stops.

 

I found this in this old thread:

 

 

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