What RAT hazard is exam-relevant?

• A. A RAT may deploy when the electrical system is de-energized and can strike rescue personnel.
• B. RAT deployment causes no hazard.
• C. RAT deployment occurs only on the ground.
• D. RAT energy cannot affect rescuers.

Answer: (A)

RAT hazards come from the potential for the ram air turbine to extend suddenly when power systems fail, creating a real physical danger to rescuers. The ram air turbine is an emergency device that extends into the airstream to provide power when the primary systems are lost. If the electrical system is de-energized, the RAT can deploy automatically, and its moving blades and deployment mechanism can strike personnel who are too close or not anticipating the extension. This is why exam material emphasizes the need to stay clear of the RAT path and to verify power isolation before approaching the aircraft. The idea that there’s no hazard or that deployment only happens on the ground isn’t accurate, since RAT deployment can occur during power loss and poses a risk to anyone nearby.