Question 594 Deck Safety

The correct answer is D) foam. Foam is the preferred agent for fighting helicopter crash fires because it is effective at extinguishing fires involving flammable liquids and vapors, which are common in helicopter crashes. Foam works by creating a blanket that smothers the fire and prevents reignition. In comparison, CO2 (option A) is less effective on liquid fuel fires, dry chemical (option B) can cause damage to sensitive aircraft components, and water (option C) may not provide enough cooling and vapor suppression for a helicopter crash fire. The use of foam as the preferred agent for fighting helicopter crash fires is specified in regulations and guidance from the US Coast Guard and other aviation authorities.