Large water tanks under the floor are filled to the exact weight the aircraft will carry when it 's full of passengers and baggage . Airbus put its A350 concept test aircraft , with its bare bones cabin , on display at the Paris Air Show . For now , flights strictly are for crew and mechanics . First fit - out of an A350 with a proper cabin is expected next year .
Airbus put its A350 concept test aircraft , with its bare bones cabin , on display at the Paris Air Show . For now , flights strictly are for crew and mechanics . First fit - out of an A350 with a proper cabin is expected next year .