Page 638 - UK Air Operations Regulations 201121

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~ Regulation NCC - ANNEX VI - Non-Commercial Complex Operations Centrik

displaying the following:
(1) magnetic heading;
(2) time in hours, minutes and seconds;
(3) barometric altitude;
(4) indicated airspeed; and
(5) slip.
(b) Helicopters operated under VMC over water and out of sight of the land, or under VMC at
night, or when the visibility is less than 1 500 m, or in conditions where the helicopter
cannot be maintained in a desired flight path without reference to one or more additional
instruments, shall be equipped, in addition to (a), with:
(1) a means of measuring and displaying the following:
(i) attitude;
(ii) vertical speed; and
(iii) stabilised heading;
(2) a means of indicating when the supply of power to the gyroscopic instruments is
not adequate; and
(3) a means of preventing malfunction of the airspeed indicating system required in (a)
(4) due to condensation or icing.
(c) Whenever two pilots are required for the operation, helicopters shall be equipped with an
additional separate means of displaying the following:
(1) barometric altitude;
(2) indicated airspeed;
(3) slip;
(4) attitude, if applicable;
(5) vertical speed, if applicable; and
(6) stabilised heading, if applicable.
NCC.IDE.H.120 AMC1 & Operations under VFR & operations under IFR — flight and navigational instruments and associated
NCC.IDE.H.125 AMC1 equipment
INTEGRATED INSTRUMENTS
(a) Individual equipment requirements may be met by combinations of instruments or by
integrated flight systems or by a combination of parameters on electronic displays. The
information so available to each required pilot should not be less than that required in the
applicable operational requirements, and the equivalent safety of the installation should be
approved during type certification of the helicopter for the intended type of operation.
(b) The means of measuring and indicating slip, helicopter attitude and stabilised helicopter
heading may be met by combinations of instruments or by integrated flight director
systems, provided that the safeguards against total failure, inherent in the three separate
instruments, are retained.
NCC.IDE.H.120(a)(1) AMC1 & Operations under VFR & operations under IFR — flight and navigational instruments and associated
NCC.IDE.H.125(a)(1) AMC1 equipment
MEANS OF MEASURING AND DISPLAYING MAGNETIC HEADING
The means of measuring and displaying magnetic heading should be a magnetic compass or
equivalent.
NCC.IDE.H.120(a)(2) AMC1 & Operations under VFR & operations under IFR — flight and navigational instruments and associated
NCC.IDE.H.125(a)(2) AMC1 equipment
MEANS FOR MEASURING AND DISPLAYING THE TIME
An acceptable means of compliance is be a clock displaying hours, minutes and seconds, with a
sweep- second pointer or digital presentation.
NCC.IDE.H.120(a)(3) AMC1 & Operations under VFR & operations under IFR — flight and navigational instruments and associated
NCC.IDE.H.125(a)(3) AMC1 equipment
CALIBRATION OF THE MEANS FOR MEASURING AND DISPLAYING PRESSURE ALTITUDE
The instrument measuring and displaying pressure altitude should be of a sensitive type calibrated in
feet (ft), with a sub-scale setting, calibrated in hectopascals/millibars, adjustable for any barometric
pressure likely to be set during flight.
NCC.IDE.H.120(a)(4) AMC1 & Operations under VFR & operations under IFR — flight and navigational instruments and associated
NCC.IDE.H.125(a)(4) AMC1 equipment
CALIBRATION OF THE INSTRUMENT INDICATING AIRSPEED
The instrument indicating airspeed should be calibrated in knots (kt).
NCC.IDE.H.120(b)(1)(iii) AMC1 & Operations under VFR & operations under IFR — flight and navigational instruments and associated
NCC.IDE.H.125(a)(8) AMC1 equipment
STABILISED HEADING
Stabilised heading should be achieved for VFR flights by a gyroscopic heading indicator, whereas for
IFR flights this should be achieved through a magnetic gyroscopic heading indicator.
NCC.IDE.H.120(c) AMC1 & Operations under VFR & operations under IFR — flight and navigational instruments and associated
NCC.IDE.H.125(c) AMC1 equipment
MULTI-PILOT OPERATIONS — DUPLICATE INSTRUMENTS
Duplicate instruments include separate displays for each pilot and separate selectors or other
associated equipment where appropriate.
NCC.IDE.H.125 Operations under IFR — flight and navigational instruments and associated equipment
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