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

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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 !

 

 

CPU i7 7700 3,6 ghz @ 4,5 stable config.
32 gigs DDR4 3200 MHz ram  Geforce GTX 1080 Ti 11 Gbyte DDR 5 
windows 10 PRO 64 Bits build 2004  - Hotas Wharthog throttle - joystick + Rudder Pedals + Trackir 5 and Oculus Rift S
480 gbyte SSD Corsair .- 240 Gb SSD kingstone  - 10.000 rpm HD 1TB

 

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

Founder (FOF)
FOF001.png

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 :)

Best regards,

 

 

Stefan van Hierden

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?

Steve Caffey

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