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Chapter 8 - Auxiliary Power Units

801. In designs incorporating the use of an auxiliary power unit, the designer shall submit manufacturer's data relating to design, power output, and control, together with any recommended operating limitations, and special installation instructions or requirements.

802. Mountings or stowages for auxiliary power units shall restrain the units from breaking loose under the acceleration loadings quoted in Section 506.

803. The installation or stowage of auxiliary power units shall provide adequate protection against corrosion, and against contamination of all working fluids supplied to the unit.

804. All services essential for the safe operation of the auxiliary power unit shall be independent of, or capable of isolation from, those services provided for main engine operation.

805. Auxiliary power units which are permanently installed shall be contained in a Designated Fire Zone. (See Chapter 10).

806. Installation of auxiliary power units shall be arranged to provide ready access for starting, controlling and operating the units under emergency or damage conditions within the vehicle's design environmental envelope.

807. Designated Fire Zones containing an engine of an auxiliary power unit shall be provided with forced ventilation arranged such that the engine may not be started until ventilation has been initiated.

808. Exhaust systems of auxiliary power units will be required to comply with the requirements of Section 711.

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