One-Engine Inoperative Cruise Speed (ETOPS) – For the purposes of those sections of part 121 applicable to ETOPS, the one-engine inoperative cruise speed is a speed within the certified operating limits of the airplane that is specified by the certificate holder and approved by the FAA for calculating required fuel reserves needed to account for [...]
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ETOPS Area of Operation – For turbine-engine-powered airplanes with two engines an area beyond 60 minutes from an adequate airport, or with more than two engines in passenger-carrying operations, an area beyond 180 minutes from an adequate airport, and within the authorized ETOPS maximum diversion time approved for the operation being conducted. An ETOPS area [...]
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ETOPS Entry Point – The first point on the route of an ETOPS flight; determined using a one-engine inoperative cruise speed under standard conditions in still air that is more than 60 minutes from an adequate airport for airplanes with two engines, and more than 180 minutes from an adequate airport for passenger-carrying airplanes with [...]
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ETOPS-Qualified Personnel – A person performing maintenance for the certificate holder, who has satisfactorily completed the certificate holder s ETOPS qualification program. Source FAA AC 120-42B
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Flight-by-Flight Exception – The application of a greater ETOPS maximum diversion authority under specific, limited circumstances, as defined in AC 120-42B, when a flight cannot be planned on the preferred route within an authorized lesser diversion time Source FAA AC 120-42B
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Maximum Diversion Time – For the purposes of ETOPS in 121.161 and related ETOPS regulations, maximum diversion time (for example 120 minutes, 180 minutes, 240 minutes, and, beyond 240 minutes) is the longest diversion time authorized for a flight under the operator’s ETOPS authority. It is calculated under standard conditions in still air at a [...]
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Configuration, Maintenance, and Procedures (CMP) Document – A document approved by the FAA that contains minimum configuration, operating, and maintenance requirements, hardware life-limits, and Master Minimum Equipment List (MMEL) constraints necessary for an airplane-engine combination to meet ETOPS type design approval requirements. Source FAA AC 120-42B
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Dual maintenance means maintenance on the same ETOPS significant system. Dual maintenance is maintenance action performed on the same element of identical, but separate ETOPS Significant Systems during a scheduled or unscheduled maintenance visit. Dual maintenance on substantially similar ETOPS significant systems means maintenance actions performed on engine-driven components on both engines during the same [...]
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Equal-Time Point (ETP) – A point on the route of flight where the flight time, considering wind, to each of two selected airports is equal. Source FAA AC 120-42B
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ER – An abbreviation used in the MMEL and in the minimum equipment list (MEL) of some certificate holders to indicate ETOPS. As used in this AC, any ETOPS MMEL/MEL restrictions applicable to ETOPS. Source FAA AC 120-42B
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Posted in Abbreviations and Acronyms, Airline Terms, FAA Terms, ICAO Terms | Tagged ETOPS, FAA, ICAO
