What is the first Bold Face step in the Big 4 procedures?

What is the first Bold Face step in the Big 4 procedures?

• A. NR
• B. AIRSPEED/ALTITUDE
• C. WHEELS/FLOATS
• D. ANALYZE

Answer: (A)

Keeping rotor speed in the green range is the first priority because rotor RPM directly controls lift and the helicopter’s ability to maintain stable flight. If NR is out of limits, you can’t safely perform further actions, since any attempt to manage airspeed, altitude, or landing gear depends on a controllable rotor to provide lift and attitude control. The Big 4 are arranged so you first stabilize the rotor, then set appropriate airspeed and altitude for safe maneuvering, configure the landing gear (wheels or floats) for the intended landing, and only then analyze the situation to decide the next actions. Once NR is verified and corrected if needed, you can proceed to the remaining steps; if NR is within limits, you still follow the sequence to ensure safe, orderly handling.

Keeping rotor speed in the green range is the first priority because rotor RPM directly controls lift and the helicopter’s ability to maintain stable flight. If NR is out of limits, you can’t safely perform further actions, since any attempt to manage airspeed, altitude, or landing gear depends on a controllable rotor to provide lift and attitude control. The Big 4 are arranged so you first stabilize the rotor, then set appropriate airspeed and altitude for safe maneuvering, configure the landing gear (wheels or floats) for the intended landing, and only then analyze the situation to decide the next actions. Once NR is verified and corrected if needed, you can proceed to the remaining steps; if NR is within limits, you still follow the sequence to ensure safe, orderly handling.