Motion for helicopter to start engine?

Motion for helicopter to start engine?

• A. Waving one arm
• B. Circular motion above head with right arm
• C. Stamping feet
• D. Clapping hands

Answer: (B)

The signal to start the helicopter engine is the circular motion of the right arm held above the head. This gesture is chosen because it’s clear, continuous, and easy to see from a distance or in rotor wash, making the instruction unambiguous for the pilot. It communicates a specific action that the pilot can recognize immediately. Other gestures—like waving a single arm, stamping feet, or clapping—aren’t standardized for engine start and can be misread or lost in noise and movement around a helicopter. They don’t convey a precise, repeatable command the pilot can rely on, which is why they’re not used for this purpose.

The signal to start the helicopter engine is the circular motion of the right arm held above the head. This gesture is chosen because it’s clear, continuous, and easy to see from a distance or in rotor wash, making the instruction unambiguous for the pilot. It communicates a specific action that the pilot can recognize immediately.

Other gestures—like waving a single arm, stamping feet, or clapping—aren’t standardized for engine start and can be misread or lost in noise and movement around a helicopter. They don’t convey a precise, repeatable command the pilot can rely on, which is why they’re not used for this purpose.