Line Maintenance – Generally refers to minor or scheduled maintenance carried out on aircraft that are: In service; and that is preparing for its first flight in service after a period of being out of service En route and stopped before its next flight – Servicing or repair between successive flights Preparing and readying an aircraft for [...]
...read more
Posted in Airline Terms, Aviation Maintenance Terms | Tagged Airline, Line Maintenance, Maintenance
Datum – An imaginary vertical plane or line from which all horizontal measurements of arm are taken, generally for balance purposes. Once the datum has been selected, all moment arms and the location of CG range are measured from this point. The datum appears on drawings as a vertical line, which is perpendicular (90°) to [...]
...read more
Posted in Aircraft | Tagged AMT, Maintenance |
Fatigue Failure – Fatigue failure of metal components is by far the most common type of the failure of aircraft components. Fatigue Failure is defined as the progressive and localized structural damage that occurs when a material is subjected to repeated or fluctuating loads (cyclic loading). The maximum stress values are less than the ultimate [...]
...read more
Posted in Aircraft Structure Terms, Aviation Terms | Tagged Aviation Safety, Engineering, Maintenance, Structures
Any point on an aircraft at which single mal-assembly could lead to catastrophe, i.e. result in loss of aircraft and/or in fatalities. Certain parts in an aircraft’s structure or system (including controls and control systems) which are vital to the safety of the aircraft, are not only designed to achieve the appropriate high integrity but [...]
...read more
Posted in Aviation Maintenance Terms, Aviation Safety Terms, ICAO Terms | Tagged Airworthiness, ICAO, Inspection, Maintenance
Heavy Maintenance – Heavy Maintenance is any maintenance, inspection, repair, or alteration a manufacturer has designated that requires specialized training, equipment, or facilities.
...read more
Posted in Aviation Maintenance Terms | Tagged Aircraft Maintenance, Airline, Maintenance
Hydraulic Ground Power Unit – Hydraulic power units, sometimes called a hydraulic mule, provide hydraulic pressure to operate the aircraft systems during maintenance. They can be used to: • Drain the aircraft hydraulic systems. • Filter the aircraft system hydraulic fluid. • Refill the aircraft system with clean fluid. • Check the aircraft hydraulic systems [...]
...read more
Posted in Aviation Maintenance Terms | Tagged Ground Equipment, GSE, Maintenance
Manufacturer’s Maintenance Manual – A manual provided by an aircraft manufacturer that outlines the methods, techniques, and practices prescribed for each person performing maintenance, alteration, or preventive maintenance on an aircraft, engine, propeller, or appliance. Also referred to as an AMM (Aircraft Maintenance Manual)
...read more
Posted in Aviation Maintenance Terms | Tagged AMT, Maintenance
Rebuilt Aircraft Engines are used engines that has been completely disassembled, inspected, repaired as necessary, reassembled, tested, and returned to service in the same manner and to the same tolerances and limits as a new engine with either new or used parts.
...read more
Posted in Aircraft Powerplant Terms | Tagged Engines, Maintenance, overhaul
CMR Definition – What is a CMR? – A CMR is a required periodic task, established during the design certification of the airplane as an operating limitation of the type certificate.
...read more
Posted in Aviation Safety Terms, FAA Terms | Tagged Airworthiness, FAA, Inspection, Maintenance
The definition of Aviation / Aircraft Maintenance as defined by the FAA and EASA is
...read more
Posted in Aviation Maintenance Terms | Tagged AMT, EASA, FAA, Maintenance
