Page 610 - UK Air Operations Regulations (Consolidated) 201121

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

CONTAMINATED RUNWAY PERFORMANCE DATA
Wet and contaminated runway performance data, if made available by the manufacturer, should be
taken into account. If such data is not made available, the operator should account for wet and
contaminated runway conditions by using the best information available.
NCC.POL.125 AMC3 Take-off — aeroplanes
ADEQUATE MARGIN
The adequate margin should be defined in the operations manual.
NCC.POL.125 GM1 Take-off — aeroplanes
RUNWAY SURFACE CONDITION
Operation on runways contaminated with water, slush, snow or ice implies uncertainties with regard
to runway friction and contaminant drag and therefore to the achievable performance and control of
the aeroplane during take-off or landing, since the actual conditions may not completely match the
assumptions on which the performance information is based. In the case of a contaminated runway,
the first option for the pilot-in-command is to wait until the runway is cleared. If this is impracticable,
he/she may consider a take-off or landing, provided that he/she has applied the applicable
performance adjustments, and any further safety measures he/she considers justified under the
prevailing conditions. The excess runway length available including the criticality of the overrun area
should also be considered.
NCC.POL.125 GM2 Take-off — aeroplanes
ADEQUATE MARGIN
‘An adequate margin’ is illustrated by the appropriate examples included in Attachment C to ICAO
Annex 6, Part I.
NCC.POL.130 En-route — one engine inoperative — aeroplanes
The pilot-in-command shall ensure that in the event of an engine becoming inoperative at any point
along the route, a multi-engined aeroplane shall be able to continue the flight to an adequate
aerodrome or operating site without flying below the minimum obstacle clearance altitude at any
point.
NCC.POL.135 Landing — aeroplanes
The pilot-in-command shall ensure that at any aerodrome or operating site, after clearing all
obstacles in the approach path by a safe margin, the aeroplane shall be able to land and stop, or a
seaplane to come to a satisfactorily low speed, within the landing distance available. Allowance shall
be made for expected variations in the approach and landing techniques, if such allowance has not
been made in the scheduling of performance data.
NCC.POL.135 AMC1 Landing — aeroplanes
GENERAL
The following should be considered to ensure that an aeroplane is able to land and stop, or a
seaplane to come to a satisfactorily low speed, within the landing distance available:
(a) the pressure altitude at the aerodrome;
(b) the runway surface condition and the type of runway surface;
(c) the runway slope in the direction of landing;
(d) not more than 50 % of the reported head-wind component or not less than 150 % of the
reported tailwind component; and
(e) use of the most favourable runway, in still air;
(f) use of the runway most likely to be assigned considering the probable wind speed and
direction and the ground handling characteristics of the aeroplane, and considering other
conditions such as landing aids and terrain.
NCC.POL.135 AMC2 Landing — aeroplanes
ALLOWANCES
The allowances should be stated in the operations manual.

SUBPART D INSTRUMENTS, DATA AND EQUIPMENT (NCC.IDE)
Reference Description
NCC.IDE.A.100 Instruments and equipment — general
(a) Instruments and equipment required by this Subpart shall be approved in accordance with
the applicable airworthiness requirements if they are:
(1) used by the flight crew to control the flight path;
(2) used to comply with NCC.IDE.A.245;
(3) used to comply with NCC.IDE.A.250; or
(4) installed in the aeroplane.
(b) The following items, when required by this Subpart, do not need an equipment approval:
(1) spare fuses;
(2) independent portable lights;
(3) an accurate time piece;
(4) chart holder;
(5) first-aid kits;
(6) survival and signalling equipment;
(7) sea anchor and equipment for mooring; and
(8) child restraint device.
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