Plane collision at Aberdeen Airport
Join Date: Jan 2005
Location: Hotel this week, hotel next week, home whenever...
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What I don't understand is why the guy in the cockpit jumped out, rather than trying to use the rudder pedals or tiller and steer the aircraft onto the grass.
If the residual hydraulic pressure or accumulator residual had fallen to an ineffective level then the aircraft would have rolled against the chocks with the slope at the first opportunity - making them very difficult to remove against the weight of the aircraft...?
Join Date: Apr 2008
Location: england
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Does the Q400 not have a standby hydraulic pump that works of the batteries? so if the engine driven pump goes u/s there is no back up from a DC pump? why could they not switch on the batteries (or plug in an GPU) then turn on the standby pumps and charge up the system? just interested as I have never flown the dash.
Does the Q400 not have a standby hydraulic pump that works of the batteries? so if the engine driven pump goes u/s there is no back up from a DC pump? why could they not switch on the batteries (or plug in an GPU) then turn on the standby pumps and charge up the system? just interested as I have never flown the dash.
The normal ground power is DC on the nose but AC can be connected on the right nacelle.The usual way to top up the parking brake is with the hand pump in the right nacelle.
If the maintenance guys had just done a "Line Check" (75hrs or 10 days I think) then the brake pressure would have been depleted to check the N2 charge in the accumulator (500psi). The hand pump needs to be used to top up the pressure again.
