What minimum flight visibility is required for VFR flight operations on an airway below 10,000 feet MSL?

• A. 3 miles
• B. 1 mile
• C. 5 miles
• D. 2 miles

Answer: (A)

When flying VFR in controlled airspace below 10,000 feet MSL, you must have at least three statute miles of visibility. This minimum helps ensure you have enough time and distance to see other aircraft and avoid cloud layers, which is essential for safe “see-and-avoid” in busy airspace like an airway. Along with the visibility, you also need to stay clear of clouds by at least 500 feet below, 1,000 feet above, and 2,000 feet horizontally. An airway sits in Class E airspace, where these minimums apply. If conditions drop below three miles of visibility, VFR flight on that airway isn’t permitted and you’d need to file IFR or re-route to meet the minimums. The other options don’t match the standard VFR minimums for this airspace segment: one or two miles are too low, and five miles is the higher minimum for operations above 10,000 MSL or in other specific situations.