PHI Group (Formerly known as Petroleum Helicopters) is a company that provides helicopter services. It operates through three business segments: Aviation, Air Medical, and MRO (maintenance, repair, and operations). The Aviation segment offers helicopter services for the oil and gas exploration and production companies, and other offshore oil service companies for transportation of personnel and equipment, transportation of personnel during medical and safety emergencies, and evacuation of personnel during the threat of hurricanes and other adverse weather conditions. The Air Medical segment delivers air medical transportation services for hospitals and emergency service agencies. The MRO segment is engaged in helicopter repair and overhaul services for flight operations customers.