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PZLBelfegor

MD-11 pax load setting

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Hello.On the overhead, in the air conditioning panel section of the MD-11's passenger version there is a setting device for "pax load". It isn't mentioned in any of the manuals and I'm interested how the selected number (ranging from 150 to 590) affects the aircraft's air conditioning system?Best regards,Dymitr

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According to an explanation on a Swissair md11 dvd I saw it's a 'virtual' passenger count - the higher the number, the more 'fresh air' is circulated through the cabins. Just saves a bit of fuel if a lower number of passengers. Don't know if it's a direct relationship though.You spooted the 'egg timer' yet? lolSome planes had an ECON setting for airflow - did the same job in essence.John E

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Thanks for the answer!

You spooted the 'egg timer' yet? lol
If it's the clock/timer on the ND - indeed :( Best regards,Dymitr

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Thanks for the answer!If it's the clock/timer on the ND - indeed :( Best regards,Dymitr
Nope, it looks at first like a combo lock for a safe... except it is a timer. On the overhead in VC view look up and behind you to the right of the fire handles I think.

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According to an explanation on a Swissair md11 dvd I saw it's a 'virtual' passenger count - the higher the number, the more 'fresh air' is circulated through the cabins. Just saves a bit of fuel if a lower number of passengers. Don't know if it's a direct relationship though.You spooted the 'egg timer' yet? lolSome planes had an ECON setting for airflow - did the same job in essence.John E
FYIThe pax load figure defaults to 240, meaning selecting a lower number than 240 does not decrease the cabin airflow anymore.Also the MD11 has an ECON switch, to deselect the econ mode at the costs of 0.6% fuel increase.This is documented in the manuals.Regards,Harry

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Nope, it looks at first like a combo lock for a safe... except it is a timer. On the overhead in VC view look up and behind you to the right of the fire handles I think.
Oh, here it is - found it, thanks for the tip.Best regards,Dymitr

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Speaking about the PAX load setting on the overhead, how do you change the 'hundreds' digits from the v/c? I can only accomplish that by choosing the 2D version of the overhead panel.

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Speaking about the PAX load setting on the overhead, how do you change the 'hundreds' digits from the v/c? I can only accomplish that by choosing the 2D version of the overhead panel.
Right click while in vc, select views, then overhead, then change it and close that view.

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I already found you can change it from the 2D view, was just hoping there was a way to do it in the actual v/c but thanks for your input though!

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