43 (or other as approved) APPROVED extinguishers, or other such approved devices capable or expected to be capable of extinguishing, putting out, quelling, or quenching a fire, a fire like event, or an event perceived, expected or suspected to be a fire, used by approved personnel. All fires in aircraft must approved, and be of a ferocity not greater than the capacity of the fire suppression equipment and approved personnel available.
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