Aviation Maintenance Reliability and Maintainability
Expert-defined terms from the Global Certificate in Aviation Maintenance Management course at London School of Business and Administration. Free to read, free to share, paired with a globally recognised certification pathway.
Aviation Maintenance Reliability and Maintainability Glossary #
Aviation Maintenance Reliability and Maintainability Glossary
Aircraft Maintenance Program (AMP) #
Aircraft Maintenance Program (AMP)
A comprehensive and systematic document that outlines the maintenance requiremen… #
The AMP includes tasks such as inspections, repairs, and replacements to ensure the continued airworthiness of the aircraft.
Airworthiness #
Airworthiness
The condition in which an aircraft conforms to its type design and is in a condi… #
Airworthiness is determined by regulatory authorities and is essential for the aircraft to be deemed safe to fly.
Availability #
Availability
The percentage of time that an aircraft is ready and able to perform its intende… #
Availability is a key metric in aviation maintenance reliability and maintainability and is calculated as the ratio of time the aircraft is available for use to the total time.
Condition #
Based Maintenance (CBM)
A maintenance strategy that involves monitoring the condition of aircraft compon… #
CBM aims to prevent failures by addressing issues before they lead to downtime or safety risks.
Corrective Maintenance #
Corrective Maintenance
Maintenance activities performed to correct a failure or defect in an aircraft #
Corrective maintenance is reactive in nature and is typically carried out in response to reported issues or failures.
Design for Reliability (DFR) #
Design for Reliability (DFR)
An approach to designing aircraft and components with reliability in mind #
DFR focuses on incorporating reliability considerations throughout the design process to ensure that the final product meets or exceeds reliability requirements.
Failure Modes and Effects Analysis (FMEA) #
Failure Modes and Effects Analysis (FMEA)
A systematic method for identifying potential failure modes of a system, compone… #
FMEA helps aviation maintenance professionals prioritize maintenance tasks and develop risk mitigation strategies.
Fleet Reliability #
Fleet Reliability
The overall reliability of a fleet of aircraft, taking into account the performa… #
Fleet reliability is a key metric for airlines and operators to assess the overall health of their operations.
Flight Safety #
Flight Safety
The practice of ensuring that aircraft operations are conducted safely to preven… #
Flight safety encompasses a range of activities, including maintenance, training, and operational procedures, to minimize risks to passengers and crew.
Human Factors #
Human Factors
The study of how humans interact with systems and equipment in the aviation envi… #
Human factors play a crucial role in aviation maintenance reliability and maintainability, as human error can contribute to maintenance-related failures.
Life #
Cycle Cost (LCC)
The total cost associated with owning, operating, and maintaining an aircraft ov… #
LCC analysis helps aviation maintenance professionals make informed decisions about maintenance strategies and investments.
Maintenance Error Decision Aid (MEDA) #
Maintenance Error Decision Aid (MEDA)
A tool used to investigate and analyze maintenance errors in aviation #
MEDA helps identify the root causes of maintenance errors and develop strategies to prevent similar incidents in the future.
Maintenance Program Development #
Maintenance Program Development
The process of designing and implementing a maintenance program for an aircraft… #
Maintenance program development involves defining maintenance tasks, schedules, and procedures to ensure the continued airworthiness of the aircraft.
Mean Time Between Failures (MTBF) #
Mean Time Between Failures (MTBF)
A measure of the average time between failures of a system or component #
MTBF is used to assess the reliability of aircraft systems and components and is an essential metric in aviation maintenance reliability and maintainability.
Mean Time to Repair (MTTR) #
Mean Time to Repair (MTTR)
A measure of the average time it takes to repair a failed system or component #
MTTR is used to evaluate maintenance efficiency and identify opportunities for reducing downtime and increasing aircraft availability.
Preventive Maintenance #
Preventive Maintenance
Maintenance activities performed to prevent failures and ensure the continued ai… #
Preventive maintenance is proactive in nature and is aimed at identifying and addressing issues before they lead to failures.
Reliability Centered Maintenance (RCM) #
Reliability Centered Maintenance (RCM)
A structured approach to developing maintenance strategies based on the reliabil… #
RCM aims to optimize maintenance tasks to improve reliability, safety, and cost-effectiveness.
Root Cause Analysis (RCA) #
Root Cause Analysis (RCA)
A method used to identify the underlying causes of a problem or failure in aviat… #
RCA helps aviation maintenance professionals understand why failures occur and develop effective solutions to prevent recurrence.
Service Bulletin (SB) #
Service Bulletin (SB)
A notice issued by an aircraft manufacturer or regulatory authority to inform op… #
Service bulletins are essential for ensuring the continued airworthiness of aircraft.
Total Cost of Ownership (TCO) #
Total Cost of Ownership (TCO)
The total cost associated with owning and operating an aircraft, including acqui… #
TCO analysis helps aviation maintenance professionals make informed decisions about aircraft investments and operations.
Turnaround Time #
Turnaround Time
The time required to perform maintenance tasks on an aircraft between flights #
Turnaround time is a critical factor in airline operations, as it directly impacts aircraft availability and schedule adherence.
Unscheduled Maintenance #
Unscheduled Maintenance
Maintenance activities performed in response to unexpected failures or issues wi… #
Unscheduled maintenance can disrupt operations and increase costs, making it important for aviation maintenance professionals to minimize unplanned downtime.
Warranty Management #
Warranty Management
The process of managing warranties for aircraft components and systems to ensure… #
Warranty management helps reduce maintenance costs and improve the reliability of aircraft systems.