时间:2011-08-13 13:07来源:蓝天飞行翻译 作者:航空 点击:次
MINIMUM SECTOR ALTITUDES (P/CG) - (See Minimum Safe Altitude/MSA (P/CG)). MINIMUM SECTOR ALTITUDE (ICAO) - The lowest altitude which may be used under emergency conditions which will provide a minimum clearance of 300 meters (1000 feet) above all obstacles located in an area contained within a sector of a circle of 25 nautical miles radius centered on a radio aid to navigation. MINIMUM VECTORING ALTITUDE/MVA - The lowest mean sea level altitude at which an IFR aircraft will be vectored by a radar controller, except as otherwise authorized for radar approaches, departures and missed approaches. The altitude meets Instrument Flight Rules obstacle clearance criteria. It may be lower than the published Minimum Enroute Altitude along an airway or J-route segment. It may be utilized for radar vectoring only upon the controllers' determination that an adequate radar return is being received from the aircraft being controlled. Charts depicting minimum vectoring altitudes are normally available only to the controllers and not to pilots. MINIMUMS/MINIMA - Weather condition requirements established for a particular operation or type of operation; e.g., Instrument Flight Rules take-off or landing, alternate airport for Instrument Flight Rules flight plans, Visual Flight Rules flight. (See Landing minimum, Instrument Flight Rules Take-off minimums, Visual Flight Rules conditions, Instrument Flight Rules conditions) (Refer to Federal Air Regulations Part 91) MINUTES-IN-TRAIL - A specified interval between aircraft expressed in time. This method would more likely be utilized regardless of altitude. MISSED APPROACH (P/CG) - (1) A maneuver conducted by a pilot when an instrument approach cannot be completed to a landing. The route of flight and altitude are shown on instrument approach procedure charts. A pilot executing a missed approach prior to the missed approach point (MAP) must continue along the final approach to the MAP. The pilot may climb immediately to the altitude specified in the missed approach procedure. (2) (3)
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