Use of HOV AUG is limited to what altitude (AGL/AWL)?

• A. 8,000 ft AGL/AWL
• B. 10,800 ft AGL/AWL
• C. 12,000 ft AGL/AWL
• D. 15,000 ft AGL/AWL

Answer: (B)

Hover augmentation systems are certified to provide reliable hover performance only within a defined altitude range. For this system, that limit is 10,800 ft AGL/AWL. As altitude increases, air becomes thinner, reducing rotor effectiveness and the available engine power to sustain a stable hover with augmentation. Beyond this limit, the augmentation cannot guarantee the same level of control and stability, increasing risk during hover operations. That’s why the operation of HOV AUG is restricted to 10,800 ft AGL or AWL, and the same limit applies whether you’re over land or water (hence AGL/AWL).