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Judgment & ambiguity · When to act

You're a ramp or ground-ops supervisor and a fueler reports a small fuel sheen near an aircraft that's boarding, but can't confirm whether it's an active leak or residual spillage from the fuel truck. Departure is imminent. When do you stop the boarding and hold the aircraft?

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I hold the aircraft the moment there's a credible unexplained fuel source near a boarding aircraft — the asymmetry decides it.

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