Turning off the CAB FANS helps quite a lot on our oldest ships. It's expressively approved on GND as long as no PAX are on board (see FCOM Bulletin 805/1).
Unfortunately CAB FANS have been boosted up to a 'No-Go-Item' in our MEL a couple of years ago (No. installed 2, No. required 1), so simply switching them off is not possible any more IMHO, at least not officially. Until then we have kept them off on the noisiest ships all day long.
Only trouble was, that the Floor Area Heater in the FWD Galley was off with the CAB FANS selected OFF. However the heater was deactivated long time ago anyway. The new FPH which are just being evaluated seem to operate irrespective of the CAB FANS P/B, at least the green light in the switch on the FAP stays on.
Last edited by Mäx Reverse; 27th November 2007 at 11:33.
Reason: MEL correction