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> The ventilation started once we were in flight I think how the A/C on an airliner is driven depends the location. There are the engines while in flight, the

> The ventilation started once we were in flight I think how the A/C on an airliner is driven depends the location. There are the engines while in flight, the APU (Auxillary Power Unit, a small jet engine that starts the main engines, tops the batteries, and other tasks) while idling on the ground, off the batteries, or off a service cart on the ground. Running the engines burns fuel, the APU burns fuel, and having the service cart incurs ground fees. So it's likely that RyanAir didn't want to spend to keep the A/C going.

user5994461 8y ago
>>> So it's likely that RyanAir didn't want to spend to keep the A/C going. No, it's not that they are cheap. The pilot warned on the speakers that the air conditioning has broken down. I recall when we boarded, the plane was much warmer than any plane I've ever been. I don't think it could get that warm in the time it take to disembark and reembark, so it probably broke during the last trip.