Technology / Aviation / Controlled Airspace Class A: (formerly PCA - Positive Control Area) generally, that airspace from 18,000' mean sea level (MSL) up to and including flight level (FL) 600 (60,000' pressure altitude), including the airspace overlying the waters within 12 nautical miles of the coast of the 48 contiguous States and Alaska. Unless otherwise authorized, all persons must operate their aircraft under IFR.
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Class Noun Synonyms: rank, grade, level, order, stratum, caste, lineage, birth, pedigree, stock, extraction, descent
Class Verb Synonyms: classify, group, arrange, assort, type, categorize, rank, grade, rate, order
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Life Style / Adoption / Parens Patriae Doctrine : Originating in feudal England, a doctrine that vests in the state a right of guardianship of minors. This concept has gradually evolved into the principle that the community, in addition to the parent MORE
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