Question about the AOM, section Pneumatics normal procedures.

[744pilot]

Hello,I was reading the Pneumatics normal procedures and I saw something like this:PRESSURIZATION MODE SELECTOR - AUTO 1 OR AUTO 2 (1=EVEN DAYS, 2=ODD DAYS)What exactly do you mean with EVEN days and ODD days.Is it like Tuesday, Thursday and etc. for EVEN day and etc.Thanks,

[Guest Mark McG]

Ramon,Today is the 13th - 13 is an ODD number.Tommorrow is the 14th - 14 is an EVEN number. HTH.

[Guest N401SS]

Okay,I feel extremely confused. What does the pressurization system have to do with what day it is?:-hmmm :-zhelp

[Gary_Hayes]

Just so you are not using the one system all the time. It shares the load.

[Guest Lenny Zaman]

it's one of the most easy ways of 'alternating' the system usage without having to install additional systems...everyone knows if today is an EVEN or ODD day, no discussion possible.Cheers

[744pilot]

Ok thank you guys.