Preventive vs Corrective Maintenance: Key Differences Explained Aircraft maintenance is broadly classified into preventive and corrective maintenance. Both are crucial for ensuring airworthiness, safety, and operational reliability. Comparison Table: Preventive vs Corrective Maintenance Aspect Preventive Maintenance Corrective Maintenance Purpose Prevent failures before they occur Repair or replace failed components Timing Performed at scheduled intervals (time, flight hours, or cycles) Performed after a fault or malfunction is detected Approach Proactive / planned Reactive / unplanned Examples Replacing filters, lubricating moving parts, scheduled inspections Fixing a faulty hydraulic pump, replacing failed avionics or sensors Objective Maintain continuous airworthiness and reliability Restore airworthiness after failure Impact on Operations Minimal disruption if scheduled properly Can cause flight delays or aircraft downtime Su...

Corrective Maintenance Explained: Repairing Aircraft After Failures Corrective maintenance is a reactive form of aircraft maintenance. It is performed after a fault or malfunction is discovered in order to restore the aircraft to a safe and airworthy condition. Corrective maintenance repairs failed components to restore aircraft airworthiness and ensure flight safety Unlike preventive maintenance, which aims to avoid failures, corrective maintenance focuses on fixing problems that have already occurred . What Is Corrective Maintenance? Corrective maintenance refers to maintenance actions taken to repair or replace failed components after a defect, fault, or system malfunction has been identified. These faults may be detected during: Pre-flight or post-flight inspections Scheduled maintenance checks Pilot reports In-flight system warnings Once a fault is confirmed, corrective maintenance is carried out according to approved maintenance procedures. Why Cor...