Page 186 - Overseas Territories Aviation Requirements Consolidated - Total AOC

Regulation OTAR Part 125 - Complex General Aviation

(7) stabilised aircraft heading;
(8) whether the power supply to the gyroscopic instruments is adequate;
(9) outside air temperature; and
(10) rate of climb and descent.
(b) An aircraft shall be equipped with spare fuses as described in 125.640 (b).
(c) In an aeroplane of MTOM over 5,700 kg:
(1) one attitude indicator shall be powered by a separate power source, which operates
automatically for at least thirty minutes after total failure of the main electrical
generating system; and
(2) shall provide an indication on the instrument panel of when the attitude indicator is
being operated by emergency power.
Note: The flight instruments requirements may be met by combinations of instruments or by
electronic displays provided that the safeguards against total failure, inherent in separate
instruments, are maintained (see 125.660).
(d) When operating at night, the following lights:
(1) lights, as required by the Rules of the Air;
(2) illumination for all flight instruments and equipment that are essential for the safe
operation of the aircraft;
(4) lights in all passenger compartments;
(5) for an aeroplane a landing light;
for a helicopter a landing light which shall be trainable in the vertical plane; and
(6) an independent portable light for every crew member station.

OTAR.125.660 Glass cockpit systems
An aircraft with advanced cockpit automation systems (glass cockpit) shall have system redundancy that
provides flight crew with attitude, heading, airspeed and altitude indications in case of failure of the primary
system or display.
OTAR.125.665 Altitude alerting system
(a) An aeroplane powered by one or more turbine jets, or a turbine-engined aeroplane of MTOM over
5,700 kg shall be equipped with an altitude alerting system or device.
(b) An altitude alerting system or device required by paragraph (a) shall:
(1) be capable of alerting the pilot to an approaching pre-selected altitude by means of
visual and aural signals, such that it is possible to establish level flight from climb or
descent without exceeding the pre-selected altitude; and
(2) be able to be tested without special equipment to determine proper operation of alerting
signals; and
(3) accept barometric pressure settings if the device operates on barometric pressure;
and
(4) enable use of pre-selected altitudes in increments commensurate with the altitudes at
which the aeroplane is approved for use.
OTAR.125.670 Communication equipment
(a) An aircraft shall be equipped with:
(1) radio communication equipment that is capable of providing continuous two-way
communications with an appropriate ATS unit or aeronautical telecommunications
facility, and for receiving meteorological information, at any time during flight; and
(2) a headset with a boom or throat microphone.
(b) The radio communication equipment shall provide for communication on the emergency
frequency 121.5 MHz.
(c) For flights in defined portions of airspace or on routes where a Required Communications
Performance (RCP) type has been prescribed, an aircraft shall, in addition:
(1) be provided with communication equipment which will enable it to operate in
accordance with the prescribed RCP type(s); and
(2) be approved by the Governor for operations in such airpsace.
(d) Communication equipment shall be installed such that failure of one unit will not result in the
failure of another unit.

OTAR.125.675 Navigation equipment
(a) An aircraft shall be equipped with a navigation system which will enable the aircraft to proceed in
accordance with:
(1) the flight plan; and
(2) the requirements of ATC.
(b) An aircraft shall be sufficiently provided with navigation equipment to ensure that, in the event of
the failure of one item of equipment at any stage of the flight, the remaining equipment will enable
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