During Lavatory Fire Extinguisher preflight, which condition indicates readiness?

During Lavatory Fire Extinguisher preflight, which condition indicates readiness?

• A. Trash Chute Trap Door Left Open
• B. Temperature Indicator Has Discs
• C. Fire Containment Door Unlocked
• D. Door Under Sink Latched

Answer: (D)

The key idea is that readiness comes from the extinguisher being securely stored and readily accessible. When the door under the sink is latched, it shows the lavatory cabinet is closed and the extinguisher is properly secured in its bracket. This prevents movement during turbulence and ensures the unit can be found and used quickly in an emergency. The other conditions don’t indicate readiness: leaving the trash chute trap door open points to a housekeeping or hazard issue, not the extinguisher’s security; a temperature indicator with discs tells you about temperature history but not whether the extinguisher is correctly stowed or charged; and an unlocked fire containment door signals a breach or mis-seal, which is not a sign of readiness.

The key idea is that readiness comes from the extinguisher being securely stored and readily accessible. When the door under the sink is latched, it shows the lavatory cabinet is closed and the extinguisher is properly secured in its bracket. This prevents movement during turbulence and ensures the unit can be found and used quickly in an emergency.

The other conditions don’t indicate readiness: leaving the trash chute trap door open points to a housekeeping or hazard issue, not the extinguisher’s security; a temperature indicator with discs tells you about temperature history but not whether the extinguisher is correctly stowed or charged; and an unlocked fire containment door signals a breach or mis-seal, which is not a sign of readiness.