During flashover, the cabin environment is typically:

• A. Non-survivable
• B. Fire suppression successful
• C. Evacuation immediate
• D. No effect

Answer: (A)

During flashover the environment inside a cabin becomes extreme and deadly. Heat builds to levels that ignite all exposed materials, temperatures soar, smoke and toxic gases fill the space, and oxygen is quickly used up. In such conditions, survival becomes highly unlikely for anyone still inside, unless they have immediate protection and a very fast exit. That is why the cabin environment is described as non-survivable during flashover.

The other ideas don’t fit because fire control or rapid evacuation isn’t achievable in that moment—the fire is growing rapidly, conditions are untenable, and attempting to suppress or evacuate is no longer quick or safe.