FAA Ground School Practice Test

What type of altitude is required for VFR flight below 3000 ft AGL while on a specified course?

1. Even thousandths

2. Odd thousandths

3. Odd thousandths plus 1000 ft

4. Odd even thousandths

The correct answer is: Odd thousandths

For VFR (Visual Flight Rules) flight below 3000 feet above ground level (AGL), pilots must adhere to specific altitude rules to maintain safe separation from other VFR traffic. The requirement is to use odd thousandths while flying on a specified course. This means that when you are flying at altitudes of 1,000 feet, 3,000 feet, etc., you would choose altitudes like 1,000 feet, 3,000 feet, or 5,000 feet, depending on your route. This system helps manage airspace efficiency and enhances safety by keeping VFR aircraft separated vertically. The use of odd thousandths for flights on a specified course reflects the principle of assigning altitudes in a manner that reduces the likelihood of mid-air conflicts, especially in areas where both VFR and IFR (Instrument Flight Rules) traffic may be present. The other potential answers would not fulfill the altitude requirements as effectively for VFR below 3,000 feet AGL.