Quote:
Originally Posted by Bigtime
I know we have some Boeing drivers here, so a question about air cabin quality and CO2.
Just did a trip to Maui. Flew YYC-OGG non-stop on the 737 MAX. Monitored CO2 with an Aranet4 device ( https://aranet.com/products/aranet4/). Cabin CO2 levels stayed at 2400-2600 (very high).
However on our return flights (OGG-YVR, YVR-YYC) we were on 737-800's and the CO2 levels on both flights were at 1400-1600.
Load factors were very close on all flights, almost completely full cabins. I have to admit that I was quite surprised that the newest aircraft had the highest CO2 levels. Wonder if there is any insight a Boeing driver (or any airline pilot) could give me. |
I found this blurb on
http://www.b737.org.uk/pneumatics.htm
"On the Max, the pneumatic bleed air system now has an electronic controller. This allows the aircraft to digitally tune the amount of air that is needed in whatever flight regime you’re in. This is different to the previous "all or nothing" system which would often take more bleed air from the engines than necessary thereby reducing performance."
Sounds like on the NG's they were "wasting" air, so possibly this is why it had better CO2 numbers.