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Aircraft Maintenance:

Aircraft maintenance is the process of ensuring that an aircraft remains airworthy, safe, and reliable throughout its operational life. It involves a structured system of inspections, repairs, replacements, and modifications to keep aircraft performance at the highest standard while complying with aviation regulations.

Objectives of Aircraft Maintenance

  • Ensure flight safety

  • Maintain aircraft reliability

  • Improve performance and efficiency

  • Extend aircraft lifespan

  • Comply with aviation regulatory standards (DGCA, EASA, FAA, ICAO)

Types of Aircraft Maintenance

  1. Line Maintenance
    Routine checks performed on the aircraft while it remains in service (e.g., pre-flight checks, daily checks, troubleshooting).

  2. Base Maintenance
    Deep and detailed inspections carried out in a hangar, including structural checks, overhaul, and major repairs.

  3. Preventive Maintenance
    Scheduled activities designed to reduce the chances of system failures.

  4. Corrective Maintenance
    Repair or replacement performed after a defect or malfunction is reported.

  5. Predictive Maintenance
    Uses advanced monitoring systems to analyze aircraft performance and detect faults before they occur.

Maintenance Checks (A, B, C, D Checks)

  • A-Check: Performed every few hundred flight hours, includes general inspections and servicing.

  • C-Check: Conducted every 18–24 months; major components and systems inspection.

  • D-Check / Heavy Maintenance Visit (HMV): The most comprehensive check, carried out every 6–12 years; aircraft is taken out of operation for complete structural inspection.

Key Areas Inspected

  • Airframe & structures

  • Engines & propulsion systems

  • Avionics & electrical systems

  • Landing gear & braking systems

  • Fuel, hydraulic, pneumatic systems

  • Cabin safety equipment

Role of Aircraft Maintenance Engineers (AME)

AMEs are licensed professionals responsible for certifying an aircraft airworthy after maintenance. They must possess strong technical knowledge, problem-solving skills, and an understanding of aviation safety regulations.

✅ Conclusion
Aircraft maintenance is essential for the aviation industry to operate safely and efficiently. A well-maintained aircraft not only ensures passenger safety but also reduces operational costs and enhances airline reliability.


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