Common Aircraft Maintenance Procedures Every Mechanic Should Know


Aviation is one of the most technically demanding and safety-critical industries globally. To ensure the airworthiness of aircraft, mechanics must be well-versed in a plethora of maintenance procedures. Here are some of the common aircraft maintenance procedures every mechanic should know:


 1. **Pre-Flight Inspections**

Every flight operation begins with a thorough pre-flight inspection. Mechanics should be adept at conducting walk-around checks to ensure that all external components, including wing flaps, ailerons, and landing gear, are functioning correctly. This includes checking for any signs of damage, leaks, or rust that might hinder the aircraft's performance.


 2. **Routine Oil Changes**

Routine oil changes are crucial for maintaining engine longevity. Mechanics should understand how to drain old oil, replace filters, and refill with the appropriate type and amount of oil. This procedure helps prevent engine wear and is often outlined based on flight hours or time intervals, making adherence to a maintenance schedule essential.


 3. **System Diagnostics and Troubleshooting**

As more aircraft systems are becoming digitally controlled, troubleshooting electronic problems has become paramount. Mechanics must be proficient in using diagnostic tools to identify issues within electrical systems, navigation aids, and cockpit instruments. Understanding fault codes and following a structured diagnostic process will enhance problem-solving capabilities.


 4. **Landing Gear Maintenance**

The landing gear system is critical for safe takeoff and landing. Mechanics should regularly inspect the landing gear for hydraulic fluid leaks, loss of pressure, and ensure adequate functioning of shock absorbers. Mechanics must also be familiar with procedures for replacing tires, brakes, and inspecting associated components to prevent failures during critical flight phases.


 5. **Continuous Airworthiness Inspections (CAIs)**

Regular inspections ensure aircraft are airworthy and comply with safety standards. Mechanics need to know how to conduct daily checks, 100-hour inspections, and annual assessments that fluctuate based on flight hours. These systematic inspections involve reviewing both the interior and exterior systems, documenting discrepancies, and filing permissible corrective actions.


6. **Control Surface Rigging**

Correctly rigging control surfaces is vital for the aircraft’s responsiveness and stability. A mechanic should be skilled at adjusting and inspecting the rigging of ailerons, elevators, and rudders, ensuring that they move freely through their full range without binding or conflicting with other components.


 7. **Fuel System Maintenance**

Understanding fuel system functionality and maintenance is also critical. Mechanics should be able to identify the various components of the fuel system, such as pumps, valves, and filters, ensuring that there are no blockages or leaks. Regular checks of fuel quality help avoid contamination that could jeopardize aircraft safety.


8. **Corrosion Detection and Treatment**

Corrosion can be insidious and significantly affect an aircraft's structure. Maintenance procedures include regular inspections for corrosion, particularly on older aircraft. Mechanisms for treatment – ranging from surface cleaning to applying protective coatings – should be known and practiced diligently.


 9. **Propeller and Rotor Maintenance**

For those working on propeller-operated or rotorcraft, wires and levers of dynamic balance must be maintained. Mechanics should know the standards for checking, balancing, and possibly overhauling these components to ensure efficiency and safety.


10. **Record Keeping and Documentation**

Detailed records are crucial for compliance and tracking the maintenance history of each aircraft. Mechanics must be proficient in maintaining accurate documentation reflecting parts used, inspections conducted, and any modifications. This is not only essential for compliance with regulatory authorities but is also crucial for operational transparency and liability protection.


In aviation maintenance, vigilance and diligence can make the difference between safe flights and potential accidents. Mastering these common procedures empowers mechanics to support aircraft safety effectively, enhance their skills, and contribute to the industry's standards of excellence. Continuous learning and adherence to best practices in maintenance procedures ensure the aircraft remain safe to fly, fostering confidence in the skies for passengers and crews alike.

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