How do you preflight the fixed Halon fire extinguisher?

• A. Verify thermometer sticker not black
• B. Verify the gauge reads green
• C. Verify the handle is not bent
• D. Inspect the label

Answer: (A)

In this preflight, the key check for a fixed Halon fire extinguisher is the temperature indicator on the bottle. The thermometer sticker shows whether the extinguisher has stayed within safe temperature limits. If the sticker is black, that signals overheating or a compromised unit, so it’s not acceptable to rely on. The other checks aren’t the standard indicator for this system: many fixed Halon bottles don’t have a usable pressure gauge to read green, so that isn’t the correct verification; a bent handle would indicate physical damage but isn’t the primary readiness signal for this extinguisher; and while inspecting the label is helpful for identification and instructions, it doesn’t tell you whether the unit has overheated.