I just wanted to know if this is a bug or if the real 757 is like this... Many times i do flights with scale in somewhere... and i also use FsPassengersX witch simulates the world of real passengers aboard (including boarding and unboarding)  Fact is that this sometimes takes quite some time to happen....  

i'm parked with Battery on and APU on, sometimes even EXT power is on... sundly after about 20 min avionics turn off, i lose the radios, and APU light goes off... i'm sure the fuel tanks contains fuel...  and when this happens i'm unable to restart the APU again, i will need to reload the aircraft, i don´t believe in the real 757 you could reload the aricraft... lol


any info???