Which signal is used for a normal engine run-up?

Which signal is used for a normal engine run-up?

• A. One finger point
• B. Two fingers back and forth
• C. Arm raised high
• D. Clenched fist

Answer: (B)

During a normal engine run-up, the appropriate signal to communicate effectively and clearly to the pilot is the gesture of moving two fingers back and forth. This specific signal indicates that everything is functioning properly, and the engine run-up can proceed as planned. Using two fingers in this manner provides a distinctive visual cue that can be easily recognized from a distance, allowing for effective communication even in potentially noisy environments. It's a standard signal that can help ensure safety and clarity during critical procedures like an engine run-up, where attention to detail is crucial. In this context, the use of one finger pointing is generally intended for different types of communication, such as directing attention or indicating a specific object, rather than indicating readiness for an action. Likewise, an arm raised high often signifies a general alert or call for attention, while a clenched fist is typically used to indicate a stop or that something is wrong, none of which would be appropriate for signaling a normal engine run-up procedure. Thus, the hands-on approach of two fingers back and forth is precise and widely accepted for indicating that the preparation for the run-up is adequate and acceptable.

During a normal engine run-up, the appropriate signal to communicate effectively and clearly to the pilot is the gesture of moving two fingers back and forth. This specific signal indicates that everything is functioning properly, and the engine run-up can proceed as planned.

Using two fingers in this manner provides a distinctive visual cue that can be easily recognized from a distance, allowing for effective communication even in potentially noisy environments. It's a standard signal that can help ensure safety and clarity during critical procedures like an engine run-up, where attention to detail is crucial.

In this context, the use of one finger pointing is generally intended for different types of communication, such as directing attention or indicating a specific object, rather than indicating readiness for an action. Likewise, an arm raised high often signifies a general alert or call for attention, while a clenched fist is typically used to indicate a stop or that something is wrong, none of which would be appropriate for signaling a normal engine run-up procedure. Thus, the hands-on approach of two fingers back and forth is precise and widely accepted for indicating that the preparation for the run-up is adequate and acceptable.