The Mem-Aerial is a decoration that boosts the total passengers to a passenger building. It was added in the Golden Age of Aviation event which lasted from mid September to mid October of 2014. It gives +3 passengers and has a size of 2x2 and a radius of 3x3. It costs 45 Pilot Helmets which were used as a currency during the event. It was then re added in the Flashback Event VI which lasted from mid May to Mid June of 2015. The decoration then cost 45 trophies which were used as a currency during the event.
Passenger boost: +3