Aircraft hangars can be classified according to the fire-prevention zone area of the aircraft parking and maintenance areas, their functional use, and maintenance process conditions. Classified by fire-prevention zone area, they can be divided into Class I, Class II, and Class III hangars. Classified by function, they can be divided into dedicated aircraft parking hangars and maintenance hangars that provide major and medium-scale aircraft repair services. Classified by maintenance process conditions, they can be divided into painting hangars and non-painting hangars, which differ in requirements for building structure, fire protection, ventilation, electrical equipment, and operational processes.
The core purpose of a hangar is to provide parking, maintenance, modification, and painting services for aircraft. Modern large-scale maintenance bases can provide "one-stop" services such as scheduled aircraft maintenance, accessory repair, full aircraft painting, passenger-to-freighter conversion, engine maintenance, and avionics system maintenance, meeting the diverse needs of domestic and international airlines. Some institutions also offer hangar leasing services, including providing secure aircraft storage space, necessary maintenance support facilities, high-standard security, and flexible leasing periods.
