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Embraer 170 - ELEC HYD PUMP 2

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Embraer 170 - ELEC HYD PUMP 2

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Old 6th Apr 2010, 17:08
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Question Embraer 170 - ELEC HYD PUMP 2

Someone please tell me...

The AOM says that the ELEC HYD PUMP 2 will be automatically activated during ENG 1 start (once N2 reaches 40%) if parking brake has been applied within the last 6 min.

Just after this, it also says that the ELEC HYD PUMP 2 will be automatically turned off after 6 min have elapsed from parking brake application.

Why is that?
What's happening during this 6 min??

It seems ELEC HYD PUMP 1 doesnt have this function...
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