APU Start without ground power connections not possible ? or issue ?

[bozflyer 5]

Hi pilots,

 

I have a question about starting APU :

 

I tryied to start the APU with battery power online only, no ground power connection.

 

Wonder myself that this way it won't start.. if you listen from outside u can ear the spool up whistle but suddenly it goes down and APU won't stat..

 

Tryied second attempt : i set up ground connection dual power but without putting online with the overhead switches.. (you can read two green switches telling "AVAIL") only connected but not activated !

In this case the APU starts without problems..

 

ISSUE or POCEDURE ?

 

anyone knows it ?

 

Thank you a lot !

 

 

[vc10man 732]

No need for a double post. Not an issue.

[mjerry6 0]

Takes a while to start just like the real plane. Just sit back and wait it will start eventually.

 

 

Sent from my iPad using Tapatalk - now Free

[Morvious 43]

No need for a double post. Not an issue.

I think that is more an Avsim "problem" because it is happening all the time lately. 

 

OT: It should just start while on battery power. Maybe your batteries were dead/drained

[Steven_Caffey 23]

OT: It should just start while on battery power. Maybe your batteries were dead/drained

 

He means make sure they were not dead, I think.. to the OP: What's your startup panel state?