The rotor brake solenoid prevents movement of which from idle to fly?

The rotor brake solenoid prevents movement of which from idle to fly?

• A. PCLs
• B. Throttle
• C. Engine power levers
• D. Collective hold

Answer: (C)

When the rotor brake is engaged, the rotor is held from turning. The rotor brake solenoid is the electrical device that keeps that brake in place, effectively preventing the engine power levers from being moved from idle toward the flight range. You must release the rotor brake before advancing the power levers to fly, otherwise applying power while the rotor is held could cause unsafe conditions. Therefore, the movement being prevented is the engine power levers moving from idle to fly. The other controls aren’t inhibited by this solenoid in the same way.

When the rotor brake is engaged, the rotor is held from turning. The rotor brake solenoid is the electrical device that keeps that brake in place, effectively preventing the engine power levers from being moved from idle toward the flight range. You must release the rotor brake before advancing the power levers to fly, otherwise applying power while the rotor is held could cause unsafe conditions. Therefore, the movement being prevented is the engine power levers moving from idle to fly. The other controls aren’t inhibited by this solenoid in the same way.