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167 ms- §1.1REGULATION — OFFICIAL DEFINITION
Critical altitude
Critical altitude means the maximum altitude at which, in standard atmosphere, it is possible to maintain, at a specified rotational speed, a specified power or a specified manifold pressure. Unless otherwise stated, the critical altitude i
- §1.1REGULATION — OFFICIAL DEFINITION
Critical engine
Critical engine means the engine whose failure would most adversely affect the performance or handling qualities of an aircraft.
- §1.2REGULATION — OFFICIAL DEFINITION
DH
DH means decision height.
- §1.2REGULATION — OFFICIAL DEFINITION
DME
DME means distance measuring equipment compatible with TACAN.
- §1.1REGULATION — OFFICIAL DEFINITION
Decision altitude (DA)
Decision altitude (DA) is a specified altitude in an instrument approach procedure at which the pilot must decide whether to initiate an immediate missed approach if the pilot does not see the required visual reference, or to continue the a
- §1.1REGULATION — OFFICIAL DEFINITION
Decision height (DH)
Decision height (DH) is a specified height above the ground in an instrument approach procedure at which the pilot must decide whether to initiate an immediate missed approach if the pilot does not see the required visual reference, or to c
- §1.2REGULATION — OFFICIAL DEFINITION
EAS
EAS means equivalent airspeed.
- §1.2REGULATION — OFFICIAL DEFINITION
EFVS
EFVS means enhanced flight vision system.
- §1.1REGULATION — OFFICIAL DEFINITION
EFVS operation
EFVS operation means an operation in which visibility conditions require an EFVS to be used in lieu of natural vision to perform an approach or landing, determine enhanced flight visibility, identify required visual references, or conduct a
- §1.2REGULATION — OFFICIAL DEFINITION
ETOPS
ETOPS means extended operations.
- §1.1REGULATION — OFFICIAL DEFINITION
ETOPS Significant System
ETOPS Significant System means an airplane system, including the propulsion system, the failure or malfunctioning of which could adversely affect the safety of an ETOPS flight, or the continued safe flight and landing of an airplane during
- §1.2REGULATION — OFFICIAL DEFINITION
EWIS
EWIS , as defined by § 25.1701 of this chapter, means electrical wiring interconnection system.
- §1.1REGULATION — OFFICIAL DEFINITION
Early ETOPS
Early ETOPS means ETOPS type design approval obtained without gaining non-ETOPS service experience on the candidate airplane-engine combination certified for ETOPS.
- §1.1REGULATION — OFFICIAL DEFINITION
Enhanced flight visibility (EFV)
Enhanced flight visibility (EFV) means the average forward horizontal distance, from the cockpit of an aircraft in flight, at which prominent topographical objects may be clearly distinguished and identified by day or night by a pilot using
- §1.1REGULATION — OFFICIAL DEFINITION
Enhanced flight vision system (EFVS)
Enhanced flight vision system (EFVS) means an installed aircraft system which uses an electronic means to provide a display of the forward external scene topography (the natural or manmade features of a place or region especially in a way t
- §1.2REGULATION — OFFICIAL DEFINITION
Equi-Time Point
Equi-Time Point means a point on the route of flight where the flight time, considering wind, to each of two selected airports is equal.
- §1.1REGULATION — OFFICIAL DEFINITION
Equivalent airspeed
Equivalent airspeed means the calibrated airspeed of an aircraft corrected for adiabatic compressible flow for the particular altitude. Equivalent airspeed is equal to calibrated airspeed in standard atmosphere at sea level.
- §1.1REGULATION — OFFICIAL DEFINITION
Extended Operations (ETOPS)
Extended Operations (ETOPS) means an airplane flight operation, other than an all-cargo operation in an airplane with more than two engines, during which a portion of the flight is conducted beyond a time threshold identified in part 121 or
- §1.1REGULATION — OFFICIAL DEFINITION
Extended over-water operation
Extended over-water operation means—
- §1.1REGULATION — OFFICIAL DEFINITION
External load
External load means a load that is carried, or extends, outside of the aircraft fuselage.