What is the rule concerning level or height the aircraft should maintain when flying IFR outside controlled airspace unless otherwise directed?
a. 2,000 feet above the highest obstacle within 8kms of the heading
b. 1,000 feet above the highest obstacle within 8kms of the estimated position of the aircraft
c. 1,000 feet above the highest obstacle within 8kms of the planned track
d. 2,000 feet above the highest obstacle within 8kms of the planned track
a. 2,000 feet above the highest obstacle within 8kms of the heading
b. 1,000 feet above the highest obstacle within 8kms of the estimated position of the aircraft
c. 1,000 feet above the highest obstacle within 8kms of the planned track
d. 2,000 feet above the highest obstacle within 8kms of the planned track