What should you do if there is a lavatory overflow or malfunction?

• A. Notify maintenance, cordon off area if necessary, guide passengers away, and update crew with status.
• B. Try to fix the overflow yourself.
• C. Immediately evacuate the aircraft.
• D. Ignore the issue.

Answer: (A)

When a lavatory overflows or malfunctions, safety and containment come first. The best action is to notify maintenance so trained technicians can diagnose and repair the issue, cordon off the area if necessary to keep passengers and crew from exposure or slipping, guide passengers away from the affected lavatory to prevent crowding and maintain hygiene, and keep the rest of the crew updated on the status so operations can be coordinated.

Why this works: maintenance has the proper tools, PPE, and procedures to isolate and fix the waste system without spreading contamination. Blocking off the area prevents slips and exposure, while guiding passengers away plus updating the crew ensures smooth cabin flow and appropriate communication with passengers.

Avoid trying to fix it yourself—tampering with the waste system can worsen the leak, cause more contamination, or damage equipment. Evacuation is not required for a lavatory issue unless there’s a broader emergency, and ignoring the problem risks escalating hazards for everyone on board.