CS 25J1106 Bleed air duct systems
ED Decision 2005/006/R
(a) For
APU bleed air duct systems, no hazard may result if a duct failure occurs at
any point between the air duct source and the aeroplane unit served by the
bleed air.
(b) Each
duct connected to components between which relative motion could exist must
have a means for flexibility.
(c) Where
the airflow delivery from the APU and main engine is delivered to a common
manifold system, precautions must be taken to minimise the possibility of a
hazardous condition due to reverse airflow through the APU resulting from
malfunctions of any component in the system.
[Amdt 25/1]
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