Which of the following are pilot warning tone outputs by the electric tone generator?

• A. CAS enroute mode and over-G warning
• B. Landing gear position warning and overspeed warning
• C. Master warn, master caution, fire, and AOA stall warning
• D. CAS landing mode alert and stick shaker warning

Answer: (B)

The main idea here is that the electric tone generator is responsible for producing audible warnings that require immediate pilot attention. Among the various alerts, two tones are classic, direct outputs: a landing gear position warning and an overspeed warning. The landing gear warning tone sounds when the gear isn’t down and locked when it should be, signaling the pilot to extend the gear. The overspeed warning sounds when the airspeed exceeds safe limits, prompting the pilot to reduce speed. These tones are specifically designed to be clear, urgent audible cues that the ETG provides to the flight deck.

Other options mix warnings that are not solely the audible tones generated by the ETG, or involve other modalities. For example, stick shaker is a tactile warning, and some warnings like master warn/caution or fire have broader annunciations beyond a simple ETG tone. CAS landing mode alerts aren’t standard ETG outputs in the context of pilot warning tones. So the two tones that are textbook outputs of the electric tone generator are the landing gear position warning and the overspeed warning.