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29th May 2002, 07:04
An my last flight on a BAe 146-100 I noticed condensation īsteamī coming from the upper air inlet openings only in the left aft fuselage (last two seat rows) during boarding and the first hour of flight, then it dissapeared. It was a sunny day with moderate temperature and low humidity.

How is the airconditioning/ventilation system in the 146 working ? Is there recirculation ? Where are the (or is the) air cycle machine installed ? Where is the air inlet located ? Where is fresh and recycled air mixed ? Are there some regions in the air ducting where water (I hope nothing else) can accumulate ?
Most interresting is not the condensation itself but the fact that it only happened in the aft left cabin and stopped after a while. Is the air quality in a 146 different in different parts of the cabin ? Should I choose a seat in a special area of the plane to prevent unhealty enviroment ?