Which category would the B737 belong to?

• A. Category G
• B. Category H
• C. Category F
• D. Category E

Answer: (C)

In tower operations questions, aircraft are grouped by performance—primarily speed and weight—to determine separation and handling procedures. A Boeing 737 is a mid-to-upper range jet airliner: it's faster and heavier than light general aviation but not among the very heaviest transports. That places it in the category that covers typical jet airliners of medium to high performance. The category assigned to that level is the one named in the correct answer. Lighter, slower airplanes would fit into the lower categories, while the very heaviest aircraft would fall into higher ones. So the B737 belongs to that mid-to-upper jet category, which is labeled as category F.