ED Decision 2005/006/R
(a) The
following instruments are required for all installation:
(1) A fire warning indicator.
(2) An indication than an APU auto-shutdown
has occurred.
(3) Any other instrumentation necessary to
assist the flight crew in:
(i) Preventing
the exceedence of established APU limits, and
(ii) Maintaining
continued safe operation of the APU.
(4) Instrumentation per subparagraph (3) need
not be provided if automatic features of the APU and its installation provide
a degree of safety equal to having the parameter displayed directly.
(b) For
essential APUs:
In addition to the items required by CS 25J1305(a), the following
indicators are required for an essential APU installation :
(1) An indicator to indicate the functioning
of the ice protection system, if such a system is installed; and
(2) An indicator to indicate the proper
functioning of any heater used to prevent ice clogging of fuel system
components.
[Amdt 25/1]
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