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What is aircraft maintenance?

Aircraft maintenance has as its main goal to maintain aircraft in an airworthy state, which means that they meet all the performance standards required by aviation authorities and are safe to fly. It involves checking various components such as engines and hydraulic and electrical systems. Avionics, the airframe and landing gear are also checked regularly to make sure they’re in good working order and free of defects.

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Aircraft maintenance can be divided into two categories: scheduled and unscheduled.

  • Scheduled Maintenance is performed according to a maintenance programme that includes routine inspections and preventive maintenance. The maintenance plan is based on an aircraft’s operating time, cycle, or calendar. This type of scheduled maintenance is done in advance to avoid breakdowns and minimise the risk of malfunctions. For information on Aircraft part suppliers, visit
  • Unscheduled Maintenance is done on a need-to-know basis. It is often caused by problems or defects that occur during normal operation. Unscheduled maintenance can include repairs to engine, hydraulic, or electrical systems and the replacement of damaged or worn out components. Unscheduled maintenance is usually more urgent, and must be addressed immediately to avoid further damage or safety hazards.

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Aircraft maintenance is highly structured and regulated by both national and international aviation authorities such as the European Aviation Safety Agency and the Federal Aviation Administration in the United States. These organisations set standards and regulations for aircraft repair and maintenance. They also require that maintenance be carried out by certified and qualified technicians and mechanics.

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