737 NG air conditioning sys operation

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737 NG air conditioning sys operation

Postby Technar » 31 Oct 2016, 20:53

Question on air cond. packs. On A/C of Ryanair we switched on both packs when bleed source was the APU and the IGV of the load compressor moved to closed position and reduced the air flow to the pneum. sys as if the APU bleed switch was off. Is this valid for all 737NGs or it is some option incorporated in the ECB software? When only one pack was on the sys operated normally.
Technar
 
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Re: 737 NG air conditioning sys operation

Postby gorge » 19 Nov 2017, 09:20

apu bleed pressure lower while both pack ON. It's normal
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