B737-800 hyd. brake press
B737-800 could not maintain brake pressure of 3000 psi. It was around 1700 psi with B hyd. pump on and gradually down to 1000 psi after 6 hrs.
Found accumulator was leaking slowing that the pre-charge pressure was gradually down to 50psi after 15 hrs.
My questions:-
1) What is the brake pressure with hydraulic pump on (3000 psi) when accumulator has pre-charge of 800 psi, 500psi, 200psi, 50psi.
2) As the B system is maintaining 3000 psi although brake pressure on the gauge shows approx. 1000 psi. ( presumably only 500 pre-charged press ), will you sign off the aircraft.
3) What is the MEL or QRH on brake.
Last edited by Kuchan; 25th Jan 2014 at 19:59.