How are potable water systems and onboard lavatories serviced safely on the ground?

• A. By following SOPs, using approved hoses and connectors, sanitization, preventing cross-contamination, and securing equipment post-service.
• B. By securing hoses and connectors and storing equipment properly after service.
• C. Service in-flight only; not on ground.
• D. Use any hose; no connectors.

Answer: (B)

The main idea here is that safety on the ground comes down to how you handle the equipment after you’ve finished the service. Securing hoses and connectors and storing all equipment properly after servicing prevents leaks, cross-contamination, and accidental trips or spills. When hoses and connectors are secured and tools are put away correctly, there’s less chance of residual fluids, contamination spreading, or equipment being left in a hazardous or obstructive state near the aircraft.

While following standard operating procedures, using approved hoses and performing sanitization are important parts of a safe process, the action that most directly reduces immediate ground risks—leaving the work area clean, secure, and ready for the next operation—is to secure the hoses/connectors and store equipment properly. The other options either add broader process steps or reference scenarios that aren’t applicable to ground servicing.