The overhead panel of an airplane cabin, featuring air vents, lighting controls, and possibly an announcement speaker system, capturing a common sight for travelers

airplane interior cabin ceiling overhead panel ventilation system air conditioning vents passenger service unit flight air travel aircraft features cabin comfort lights reading lamp individual control airliner commercial flight passenger amenities speaker grille call button aircraft design travel experience inflight convenience cabin design emergency information modern aviation overhead compartment airline services flying ventilation ducts temperature control oxygen masks cabin pressure personal space airline industry aircraft safety longhaul flight economy class inflight environment air quality comfort features personal light seat indicator jetliner passenger aircraft