Push Back and Engine Start

On arrival at your aircraft before the flight ,it is a good idea to use the view modes and check the area all around where the aircraft is parked. Note where the taxiway to the active runway is, then work out how far the aircraft needs to be pushed back. Now work out  how far left or right the turn needs to be. You do not want to disconnect the tug and find yourself stuck facing the wrong way in a cul de sac.

Complete all your cockpit preparation ensuring the parking brake is set and you have either APU power or Ground Power air supply . Ensure the switches are in the correct position.  After programming the FMC check your fuel calculations again and your take off weights. Assuming the clearance has been given for push and start  the last thing you do is turn off both Packs and ensure you get at least 20 psi pressure. Do the pushback and start your engines.

When the pushback is completed the ground crew will tell you to set parking brakes. DO NOT DO THIS UNTIL BOTH ENGINES ARE FULLY RUNNING.  The reason for this is sometimes the wind will prevent the engine on the windward sign from igniting and  running.  You therefore are going to have to turn the aircraft to a different position by pushback and  turning again.  If you have set the parking brake, the tug will be disconnected, you will then be stuck and cannot start the engine. Therefore only set the parking brake after pushback when you are satisfied both engines are running stable.