shuttleamericae170
6th Apr 2010, 17:08
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...
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...