VIII. Equipment, systems, and installation.
The basic equipment and installation must comply
with Subpart F of JAR–29 through Amendment
29–14, with the following exceptions and
additions –
(a) Flight and navigation instruments
(1) A magnetic gyro-stabilised
direction indicator instead of the gyroscopic
direction indicator required by JAR 29.1303
(h); and
(2) A standby attitude indicator which
meets the requirements of JAR 29.1303 (g) (1)
to (7), instead of a rate-of-turn indicator
required by JAR 29.1303(g). If standby
batteries are provided, they may be charged
from the aircraft electrical system if adequate
isolation is incorporated. The system must be
designed so that the standby batteries may not
be used for engine starting.
(b) Miscellaneous requirements
(1) Instrument systems and other
systems essential for IFR flight that could be
adversely affected by icing must be provided
with adequate ice protection whether or not the
rotorcraft is certificated for operation in icing
conditions.
(2) There must be means in the
generating system to automatically de-energise
and disconnect from the main bus any power
source developing hazardous overvoltage.
(3) Each required flight instrument
using a power supply (electric, vacuum etc.)
must have a visual means integral with the
instrument to indicate the adequacy of the
power being supplied.
(4) When multiple systems performing
like functions are required, each system must
be grouped, routed, and spaced so that physical
separation between systems is provided to
ensure that a single malfunction will not
adversely affect more than one system.
(5) For systems that operate the required
flight instruments at each pilot’s station –
(i) Only the required flight
instruments for the first pilot may be
connected to that operating system;
(ii) Additional instruments,
systems, or equipment may not be
connected to an operating system for a
second pilot unless provisions are made
to ensure the continued normal
functioning of the required instruments in
the event of any malfunction of the
additional instruments, systems, or
equipment which is not shown to be
extremely improbable;
(iii) The equipment, systems, and
installations must be designed so that one
display of the information essential to the
safety of flight which is provided by the
instruments will remain available to a
pilot, without additional crew member
action, after any single failure or
combination of failures that is not shown
to be extremely improbable; and
(iv) For single-pilot configurations,
instruments which require a static
source must be provided with a means of
selecting an alternate source and that
source must be calibrated.
(6) In determining compliance with the
requirements of JAR 29.1351 (d) (2), the
[supply of electrical power to all systems
necessary for flight under IFR must be included
in the evaluation. ]
(c) Thunderstorm lights. In addition to the
instrument lights required by JAR 29.1381 (a),
thunderstorm lights which provide high intensity
white flood lighting to the basic flight instruments
must be provided. The thunderstorm lights must
be installed to meet the requirements of JAR
29.1381(b).
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