What is the minimum altitude that is prescribed for off airways IFR flights over mountainous terrain?
A
2,000 feet above the highest obstacle within a horizontal distance of 5 NM of the course.
B
1,000 feet above the highest obstacle within a horizontal distance of 4 NM of the course.
C
2,000 feet above the highest obstacle within a horizontal distance of 4 NM of the course.✓ Correct Answer
Explanation
Off airways in designated mountainous areas, 14 CFR 91.177(a)(2)(i) requires an altitude of at least 2,000 feet above the highest obstacle within a horizontal distance of 4 nautical miles of the course. Elsewhere it is 1,000 feet above the highest obstacle within 4 NM.
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