I was on a flight this weekend and I noticed what looked like steam coming out of the ventilation system underneath the overhead compartment. It was coming out of about 6-8 rows. As the pilot increased throttle while taxing I noticed more was coming out and it even began coming out above the overhead compartments. As we came to a stop and idled I only noticed a little out from underneath the overhead compartment but as we began to take off before rotation I noticed a lot coming out from below and above. As we began rotation and got airborne I never saw anymore for the rest of the flight.
I only fly like once or twice a year so maybe this a normal thing and I just dont pay attention to it.
I only fly like once or twice a year so maybe this a normal thing and I just dont pay attention to it.