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Periodical maintenance

Scheduled maintenance
Airframe non-destructive testing including such methods as ultrasonic, eddy-current, impedance, magnetic particle and liquid penetrant inspections
Aircraft airframe and components current repairs
Airframe elements, engines, APU and their components replacement
Autumn-winter and spring-summer period aircraft maintenance in accordance with aviation authority requirements
Aircraft storage services, aircraft preparation to storing, preparation to flight after storing
Specific maintenance
Troubleshooting
Maintenance to be performed on aviation authority instructions (one-time inspections, checks and reworks)

Aircraft types: