What is a 40 1 climb gradient?

The 152 feet per NM is the 40:1 climb gradient. 1 NM = 6076 feet. 6076 / 40 = 152 feet per NM. If the calculated climb gradient is greater than 200 feet per nautical mile the airport departure minimums must be reviewed to determine if a climb gradient greater than 200 feet is published.



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