Originally Posted by
jimvaughan
BTW the reason I ask my wife is on a 787 and the pilots have set the number of pax to a number far higher than the actual number of pax. This is causing the air to be very dry. When she asked why he did this he said it reduces the fuel burn.
With a very low passenger count, humidity will be marginally less with the pax count set to an artificially higher value.
In 5yrs on the aircraft, I’ve never thought of the air as “dry”. Compared to most other jets the low cabin altitude provides a far more comfortable environment on long haul trips.
The fuel saving your wife was quoted is rubbish. We will see a slightly higher fuel burn for a higher pax number entered.