Piotr Krupa Aviation

51.10.Z - Passenger air transport

51.21.Z - Freight air transport

52.23.Z - Service activities incidental to air transportation

74.90.Z - Other professional, scientific and technical activities not elsewhere classified

77.35.Z - Rental and leasing of air transport equipment

85.53.Z - Out-of- school forms of driving education

85.59.B - Other out-of-school forms of education, not elsewhere classified