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Help from a Spirit guy familiar with fumes...

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Old 03-04-2022 | 11:31 AM
  #11  
CincoDeMayo
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Originally Posted by emersonbiguns
No.

Filler
You will soon. Haha

All your base are belong to us!
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Old 03-04-2022 | 11:34 AM
  #12  
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symbian simian
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From: Aircraft & Seat: old & hard
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Originally Posted by emersonbiguns
No.

Filler
supposedly it helps, so that is what we (are supposed to) do....
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Old 03-04-2022 | 04:16 PM
  #13  
FNGFO
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Originally Posted by symbian simian
Do you run the APU for 3 minutes before you can turn the bleed on?
Neither do most of the guys I fly with. I start a clock when I start the APU and hit the bleed at 4 mins. I figure one minute to start and 3 for the bleed.
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Old 03-04-2022 | 05:37 PM
  #14  
Powderkeg
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Originally Posted by symbian simian
Do you run the APU for 3 minutes before you can turn the bleed on?
No the emphasis has been on waiting for a complete APU shutdown before turning off the ship batteries. They think not allowing time (2 min after AVAIL light goes out) can cause an erroneously low oil level in the sight gauge and then the mechanics over service it.
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Old 03-04-2022 | 07:31 PM
  #15  
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From: Aircraft & Seat: old & hard
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Originally Posted by FNGFO
Neither do most of the guys I fly with. I start a clock when I start the APU and hit the bleed at 4 mins. I figure one minute to start and 3 for the bleed.
You must be me
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Old 03-04-2022 | 08:42 PM
  #16  
lowandslow
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Originally Posted by Powderkeg
No the emphasis has been on waiting for a complete APU shutdown before turning off the ship batteries. They think not allowing time (2 min after AVAIL light goes out) can cause an erroneously low oil level in the sight gauge and then the mechanics over service it.
That's been sop at NK as long as I've been there.
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Old 03-05-2022 | 03:44 AM
  #17  
Bluedriver
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Originally Posted by symbian simian
Oil pressure on the CEO is a lot higher than on the NEO. No idea if that has anything to do with it, but it seems the CEO is worse.
Thank you! I appreciate someone willing to answer me. At the company I follow, there are a couple of dedicated biddable seats/fleets that are all NEO, no CEO.

Yes, I'm aware of the APU being a big part of the problem, especially when it is overserviced with oil, and maybe in other scenarios.

However, I have also had events that were very clearly from CEO engines.
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Old 03-05-2022 | 03:48 AM
  #18  
Bluedriver
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Originally Posted by Powderkeg
No the emphasis has been on waiting for a complete APU shutdown before turning off the ship batteries. They think not allowing time (2 min after AVAIL light goes out) can cause an erroneously low oil level in the sight gauge and then the mechanics over service it.
Makes sense as restarting the APU and letting it go through a complete shutdown before turning off the batteries can sometimes clear on erroneous APU LOW OIL message.

What is the theory behind waiting 3 mins to bleed the APU? I like the 4 min hack for starting.

Thanks guys, this has been helpful and still looking forward to more input.
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Old 03-05-2022 | 06:05 AM
  #19  
CincoDeMayo
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Originally Posted by Bluedriver
Makes sense as restarting the APU and letting it go through a complete shutdown before turning off the batteries can sometimes clear on erroneous APU LOW OIL message.

What is the theory behind waiting 3 mins to bleed the APU? I like the 4 min hack for starting.

Thanks guys, this has been helpful and still looking forward to more input.
The official answer it the 3 minutes allows the seals to reach “optimum performance” and should eliminate trace oil in the ducts…so less chance you smell something from oil getting into the system
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Old 03-05-2022 | 10:39 AM
  #20  
Bluedriver
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Originally Posted by CincoDeMayo
The official answer it the 3 minutes allows the seals to reach “optimum performance” and should eliminate trace oil in the ducts…so less chance you smell something from oil getting into the system
Also makes sense.
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