RegulationsQuestion 1 of 100
A remote pilot is hired to photograph damage near the top of a 700-ft radio tower. What is the highest altitude the small unmanned aircraft may legally reach during this inspection?
a.400 ft AGL, because the 400-ft ceiling has no exceptions
b.700 ft AGL, matching the exact height of the tower
c.1,100 ft AGL, as long as the aircraft stays within a 400-ft radius of the tower
d.800 ft AGL, which is twice the standard 400-ft limit
Explanation
Correct answer: 1,100 ft AGL. Under §107.51 the aircraft may fly higher than 400 ft AGL if it remains within a 400-ft radius of a structure and does not climb more than 400 ft above that structure's uppermost limit, so 700 + 400 = 1,100 ft. The 400-ft-only answer ignores the structure exception, and the 700-ft and 800-ft answers apply the wrong math to the rule.
Law Reference: 14 CFR §107.51Practice all 100 questions free — no signup required.
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