Normally APU takes fuel from Left wing tank through Gravity Feed. There is no separate fuel pump for APU as in A320 aircraft. Gravity feed is through the fuel feed line (for engine#1) on LH Wing. So Fuel Pump of LH tank is normally kept ON to supply a Positive Fuel pressure though it is not really required.
@@SelvanSelvaraj Gravity fuel feed requires the fuel to gravitate😉 Meaning the fuel tank must be above the apu.. If you dont use AC boost pumps to supply fuel (I dont) the APU DC boost pump will (automatically) supply fuel from the left main tank. If the AC and DC boost pumps do not supply fuel, the APU will suction feed from the left main tank.
I live the ding at 1:52
Before switch on the apu bleed valve, run the apu for two full minute this is important
no
Yes
@@hansloyalitat9774if you care about it, you will
thank you ,but can you do a complete startup, ( apu gpu, and fmc)?
Thank You... Will surely do...
whats the minimum battery volt before/ grnd/apu start? and can you do a complete startup, from you go on board and end with fmc?
Thank you, sir.
Thank you but can you show a PTU Startup?
Sure... Will make one soon... Thank you
Sir can u plz explain pneumatics system
Hi, how noisy are the packs in the flightdeck
Yes.. unedited video...
Selvan Selvaraj are you able to do a video on the recirculation fans noise
Stuck in Lockdown...
But surely will do...
Selvan Selvaraj Stay safe
Why fuel pump in tank 1 switched on after apu start?
Normally APU takes fuel from Left wing tank through Gravity Feed. There is no separate fuel pump for APU as in A320 aircraft. Gravity feed is through the fuel feed line (for engine#1) on LH Wing. So Fuel Pump of LH tank is normally kept ON to supply a Positive Fuel pressure though it is not really required.
Moreover the fuel boost pumps require AC power to operate which will be available after APU start..
@@SelvanSelvaraj APU takes fuel through gravity feed?! Are you serious??🙆🏻♂️😂
@@speedbird9313I might be wrong.. If you know please answer...
@@SelvanSelvaraj Gravity fuel feed requires the fuel to gravitate😉 Meaning the fuel tank must be above the apu..
If you dont use AC boost pumps to supply fuel (I dont) the APU DC boost pump will (automatically) supply fuel from the left main tank.
If the AC and DC boost pumps do not supply fuel, the APU will suction feed from the left main tank.