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precision runway CAT I
avia., Canada	A runway adequate for instrument approach down to a decision height DH lower than 250 ft, but not lower than 200 ft, above height above aerodrome HAA or height above touchdown HAT and in operating visibility not less than 0.5 SM or runway visual range RVR 2600 ft.

precision: 4 phrases in 1 subject

Abbreviation

4