Periodic checks, modifications, overhauls and repair work are carried out on a 24 hours a day basis by the Overhaul and Maintenance Workshops (Structural Repair, NDT, Cabin Interior and Composite, Painting) in Istanbul under the Directorate of Aircraft Maintenance on the following types of aircraft:
| Rating | Limitation | Base | Line |
|---|---|---|---|
| Aeroplanes 5700 kg and above | Airbus A300 B2/B4/C4/F4 series Airbus A300-600 Airbus A310-200/-300 Aiıbus A319/A320/A321 Series Airbus A330 series Airbus A340-200 Airbus A340-300 Boeing B727-200 Boeing B737-200 Boeing B737-300/-400/-600 Boeing B737-600/-700/-800/-900 Boeing B747-400 Boeing B757-200 Boeing B767-200/-300 MD-80 series BAe RJ-70/-85/-100 BAe 146 QT Gulfstream G IV |
X X X X X X X X X X X |
X X X X X X X X X X X X X X X X X X X |
| Aeroplanes below 5700 kg. | Cessna 172 | X | X |