Which of the following is NOT listed as a potential electrical fire source?

• A. Hairdryer
• B. Oven
• C. Boilers
• D. Water heater

Answer: (A)

When assessing electrical fire sources on an aircraft, the focus is on built-in galley equipment and other onboard systems that can overheat or short-circuit. Ovens, boilers, and water heaters are all part of the aircraft’s galley or service systems and use electrical heating elements, wiring, and controls that can fail and start fires if something goes wrong. These are the kinds of sources pilots and crew are trained to recognize and manage because they pertain to the aircraft’s own equipment.

A hairdryer, by contrast, is a personal, off-ship appliance and not part of the aircraft’s standard electrical systems. It isn’t listed as a potential onboard electrical fire source in typical fire-and-smoke training materials, so it’s the item that does not fit the category of listed potential sources.