After the crew received the departure clearance, it is time to start the engines.
aircraft engine
The engine starter is operated by pneumatic air. So you need the APU (auxiliary power unit) to pressurize the pneumatic duct. If the APU is not working at least 2 engines have to be started by ground pneumatic power. On A380, engines 3 and 4 are started first because they pressurize the yellow hydraulic system, which is used to power the steering. You will also need the electrical power for the spark plugs.
The airconditions are switched off, if you are a passenger, you can hear the aircondition is off.
There is a engine start check list, pilot lives with check lists. The clearance from the ground is requested.
“starting number 3″, then the respond from the ground will come through the interphone.. ” clear to start engine 3″
The captain rotate the start switch to ignition start. The pilot not flying to look at the instrument… and check for sign of oil pressure to increase and say ” oil pressure”. The staff on ground will check for the fan, it should rotate.. and say ..”number 3 engine N1 rotating.
At certain percentage of N2, the captain select on the fuel lever, to enable the fuel to enter to engine. The engine should burst to life.
The engine generators and hydraulic power. will take over the system automatically. The passengers will notice a flicker in the cabin lights showing the transfer of the power.
After the clearance to start the engines were received from the ground, the captain ros
