What are the characteristics of a Group 4 UAS?

• A. 0-20 lbs, <1200 ft AGL, 100 knots, Raven (RQ-11)
• B. 21-55 lbs, <3500 ft AGL, <250 knots, ScanEagle
• C. <1320 lbs, <FL180 (18,000 ft MSL), <250 knots, Shadow (RQ-7B)
• D. >1320 lbs, <FL180 (18,000 ft MSL), Any airspeed, Predator (MQ-1A/B)

Answer: (D)

Group 4 UAS are the largest drones designed for high-altitude, long-endurance missions. They are defined by a maximum takeoff weight greater than about 1,320 pounds, an operating ceiling up to 18,000 feet MSL, and no fixed upper limit on airspeed. The Predator is a quintessential example because it is a heavy, high-altitude platform built for extended missions and flexible speed, matching all these criteria.

Raven is tiny and operates at very low altitudes and slower speeds, so it fits the smallest groups. ScanEagle is heavier than Raven but stays at lower altitudes and moderate speeds, not reaching Group 4’s altitude and weight profile. Shadow sits in the mid-size category and, in these descriptors, does not meet the Group 4 thresholds.