| English thesaurus | |||
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| I An ILS facility providing operation down to a 200 foot decision height and an RVR of not less than 2,400 feet. (Interex) | |||
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| II An ILS facility providing operation down to a 100-foot decision height and an RVR of not less than 1,200 feet. (Interex) | |||
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| cat | |||
