Which type of aircraft can a size 2 TDP support?

• A. Large utility/attack (UH-60, AH-64)
• B. Small utility/attack (LUH-72, AH-1)
• C. Cargo (MV-22, any CH-## AC)
• D. Small observation (any OH-## AC)

Answer: (B)

A size 2 TDP is designed to support small utility/attack helicopters. These aircraft have compact rotor systems and landing gear footprints, with a downwash and wake footprint that fits within a smaller landing zone. That makes a size 2 TDP the appropriate, safe choice for operations by small utility/attack platforms such as LUH-72 and AH-1.

Larger utility/attack helicopters, with bigger rotor discs and stronger downwash, require a bigger TDP to ensure clearance from obstacles and safe approach/departure paths. Cargo helicopters and tiltrotor transports likewise need even more space to accommodate their size and handling. While small observation helicopters exist, the sizing convention for this scenario assigns size 2 specifically to the small utility/attack category, which is why it’s the best fit.