Page 129 - Overseas Territories Aviation Requirements Consolidated - Total AOC

Regulation OTAR Part 121 - CAT - Large Aeroplanes

OTAR.121.665 Altitude alerting system
(a) 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.
(c) An aircraft that is operating under IFR but not required by paragraph (a) to carry an altitude
alerting system or device shall be equipped with a means of indicating an altitude assigned by
ATC.
(d) The means of indicating assigned altitude as required by paragraph (c) shall:
(1) be located so that it may be readily adjustable from each pilot seat; and
(2) display assigned altitude information that is clearly visible to all flight crew members
whose duties involve monitoring altitude assignment; and
(3) enable use of pre-selected altitudes in increments commensurate with the altitudes at
which the aeroplane is operated.
OTAR.121.670 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.121.675 Navigation equipment
(a) An aircraft shall be equipped with a navigation system which will enable the aircraft to proceed in
accordance with:
(1) the operational 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
the aircraft to navigate in accordance with the applicable requirements.
(c) For operations where a navigation specification for performance-based navigation (PBN) has
been prescribed, an aeroplane shall, in addition, be provided with navigation equipment which will
enable it to operate in accordance with the prescribed navigation specification(s) and be
approved in accordance with Subpart SPA.
(d) An aircraft operating in airspace where minimum navigation performance specifications (MNPS)
are prescribed shall:
(1) be equipped with navigation equipment capable of continuously and accurately
indicating to the flight crew adherence to or departure from track; and
(2) be approved in accordance with Subpart SPA.
(e) An aircraft operating in RVSM airspace shall be:
(1) provided with equipment capable of:
(i) indicating to the flight crew the flight level being flown; and
(ii) automatically maintaining a selected flight level to within ± 65 feet; and
(iii) providing an aural and visual alert to the flight crew when a deviation from the
selected flight level occurs. The threshold for the alert shall not exceed 300
feet (90 metres); and
(2) approved in accordance with Subpart SPA.
Overseas Territories Aviation Requirements 129 of 386