PARKING PROCEDURE (Before Both Engines Shut Down)
Step 1: Accumulator pressure check (Engines running and brake pedals pressed)
The first step is to check the accumulator pressure on the BRAKES and ACCU PRESS indicator before applying the parking brake. The accumulator pressure must be in the green band .
If the pressure is not sufficient, the flight crew must keep the brake pedals pressed and contact the ground operator to put chocks in place before switching off the engines and make a logbook entry once the aircraft is parked to alert Maintenance.
Step 2: Parking brake application (Engines running and brake pedals still pressed)
If accumulator pressure is sufficient, the parking brake selector can be set to ON.
Step 3 & 4: Check of the brake pressure, pedal brake release and engine shutdown
To ensure that the Parking Brake SELector Valve (PBSELV) opened correctly and that sufficient hydraulic pressure is provided to the brakes, it is essential to check the left and right brake pressure on the BRAKES and ACCU pressure indicator.
If the indicators show insufficient parking brake pressure, the flight crew must keep the brake pedals pressed and contact the ground operator to put chocks in place before switching off the engines and then make a logbook entry to alert Maintenance.
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