Line vs Base Maintenance: Key Differences Explained In aviation, aircraft maintenance is divided into different categories to ensure safety, efficiency, and regulatory compliance. Two major categories are Line Maintenance and Base Maintenance . While both are essential, they differ significantly in scope, duration, and location. Comparison of line maintenance and base maintenance in aircraft operations Understanding the difference between line and base maintenance is especially important for aviation students, aircraft maintenance engineers (AMEs), and those preparing for licensing exams. What Is Line Maintenance? Line maintenance consists of routine, short-duration maintenance tasks performed during daily aircraft operations. These tasks are carried out while the aircraft is in service, usually at the airport. Line maintenance focuses on keeping the aircraft airworthy between flights and identifying minor defects before they become serious issues. What Is Base ...

Base Maintenance Explained: Heavy Aircraft Maintenance and Overhauls Base maintenance refers to extensive, detailed maintenance performed on an aircraft while it is grounded for a longer period. Unlike line maintenance, which is quick and routine, base maintenance occurs in hangars and involves deep inspections, major system checks, and component overhauls. Base maintenance includes heavy inspections, system checks, and component overhauls to ensure aircraft safety and airworthiness Base maintenance is essential to ensure the long-term safety, reliability, and airworthiness of the aircraft. What Is Base Maintenance? Base maintenance includes all heavy and detailed maintenance activities that cannot be completed quickly on the ramp. It is often part of a scheduled maintenance program and may include major checks, structural inspections, and component replacements or overhauls. Aircraft are typically taken to dedicated maintenance hangars equipped with specialized t...