Is draining fuel from the system at drain or bleed valves allowed?

Is draining fuel from the system at drain or bleed valves allowed?

• A. Allowed
• B. Prohibited
• C. Optional with conditions
• D. Not specified

Answer: (B)

Draining fuel through drain or bleed valves is not allowed because those valves are not outlets for disposing fuel. Opening them can release flammable fuel liquid and vapors into the engine space, deck, or bilge, creating a serious fire or explosion hazard and risking environmental contamination. Fuel spills are not acceptable and are typically governed by environmental rules, so any fuel removed during maintenance must be collected in an approved container and disposed of according to regulations. If fuel must be handled during servicing, use proper containment and follow approved procedures to purge air without draining fuel through those valves.

Draining fuel through drain or bleed valves is not allowed because those valves are not outlets for disposing fuel. Opening them can release flammable fuel liquid and vapors into the engine space, deck, or bilge, creating a serious fire or explosion hazard and risking environmental contamination. Fuel spills are not acceptable and are typically governed by environmental rules, so any fuel removed during maintenance must be collected in an approved container and disposed of according to regulations. If fuel must be handled during servicing, use proper containment and follow approved procedures to purge air without draining fuel through those valves.