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Sec. 121.253 - Powerplant fire protection.
(a) Designated fire zones must be protected from fire by compliance with §§121.255 through 121.261. (b) Designated fire zones are -- (1) Engine accessory sections; (2) Installations where no isolation is provided between the engine and accessory compartment; and (3) Areas that contain auxiliary power units, fuel-burning heaters, and other combustion equipment. |