ED Decision 2005/006/R
The air intake system for the APU:
(a) Must
supply the air required by the APU under each operating condition for which
certification is requested,
(b) May
not draw air from within the APU compartment or other compartments unless the
inlet is isolated from the APU accessories and power section by a firewall,
(c) Must
have means to prevent hazardous quantities of fuel leakage or overflow from
drains, vents, or other components of flammable fluid systems from entering,
(d) Must
be designed to prevent water or slush on the runway, taxiway, or other airport
operating surface from being directed into the air intake system in hazardous
quantities,
(e) Must
be located or protected so as to minimise the ingestion of foreign matter
during takeoff, landing, and taxiing.
[Amdt 25/1]
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