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APU GEN

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After V1.3 I found the FO too early to turn on the APU GEN before the APU GEN light on?Sorry for my poor English.Thanks.

  • Commercial Member
After V1.3 I found the FO too early to turn on the APU GEN before the APU GEN light on?Sorry for my poor English.Thanks.
Hi Wei,I didn't change any logic in that area.At which specific stage are you referring to? The FO (may) turn on the APU more than once.Thanks,
Hi Wei,I didn't change any logic in that area.At which specific stage are you referring to? The FO (may) turn on the APU more than once.Thanks,
I don't go through PreFlight but..Before SP2, the EGT went up slowly and then APU lights on.After SP2, the EGT went up and then down until it stables and then the light comes on.Little bit different but surely after SP2 it takes more time. (Or maybe because I switch on realistic start process?)

Hoang Le

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MSFS2020

  • Author

Hi Bryan,Thanks for your reply. At electrical power up stage. I found the ifly 737ng SP2's APU start-up time seems longer than before. Is this problem?Thanks again.Hi Sk1nNy,I think so too. Thanks for your reply.

  • Commercial Member
Hi Bryan,Thanks for your reply. At electrical power up stage. I found the ifly 737ng SP2's APU start-up time seems longer than before. Is this problem?Thanks again.Hi Sk1nNy,I think so too. Thanks for your reply.
It appear with SP2 the APU takes a lot longer before it comes on-line.I'll change the timing.In the meantime, just manually turn on the APU gens after the FO starts the APU.Cheers,
  • Author
It appear with SP2 the APU takes a lot longer before it comes on-line.I'll change the timing.In the meantime, just manually turn on the APU gens after the FO starts the APU.Cheers,
Roger.Thanks for your reply.

I was going to come and report thesame thing, Low and behold a fix is already in the works. :( :(

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  • Commercial Member
I was going to come and report thesame thing, Low and behold a fix is already in the works. :( :(
Yeah, this somehow got though the test screening :( 1.4 will be out shortly.My 737 consultant has also pointed out a couple other changes he wants, and that will be in 1.4 as well.Cheers,
  • 2 weeks later...

Btw, I dont know if this is relevant: my FO seems to run fire tests and APU start 2 times one after another! On the first run he gets to selecting apu gens OK and then shortly after that starts with the fire tests again and this time shuts APU gens off. Do I need to have Realistic Start Process box ticked? Thanks,Dirk.

FO seems to run fire tests and APU start 2 times
Ok, I've checked again, and the FO tries to run fire tests twice for sure. The APU generators switching is messed up, I launched and watched the overhead a few times. The FO tries to turn on the left APU GEN switch when the APU GEN OFF BUS light is not on yet. Then he runs the fire test for the second time. I have to turn the APU GEN switches myself.Thanks,Dirk.
  • Commercial Member
Ok, I've checked again, and the FO tries to run fire tests twice for sure. The APU generators switching is messed up, I launched and watched the overhead a few times. The FO tries to turn on the left APU GEN switch when the APU GEN OFF BUS light is not on yet. Then he runs the fire test for the second time. I have to turn the APU GEN switches myself.Thanks,Dirk.
The APU gen is fixed in 1.4And you're probably hearing the wheel well fire test.

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