Page 76 - UK ADR Aerodrome Regulations (Consolidated) October 2021

Part OPS - ANNEX IV - Operations Requirements - Aerodromes

elevation of the runway end and the highest elevation of the touchdown zone, to the
accuracy of one-quarter metre or foot.
AERODROME REFERENCE TEMPERATURE
(a) The aerodrome reference temperature should be determined in degrees Celsius.
(b) The aerodrome reference temperature should be the monthly mean of the daily maximum
temperatures for the hottest month of the year (the hottest month being that which has
the highest monthly mean temperature), averaged over a period of five (5) years.
AERODROME DIMENSIONS AND RELATED INFORMATION
The following data are measured or described, as appropriate, for each facility provided on the
aerodrome:
(a) Runway
(1) true bearing to one-hundredth of a degree;
(2) designation number;
(3) length;
(4) width;
(5) displaced threshold location to the nearest metre or foot;
(6) longitudinal slope;
(7) surface type;
(8) type of runway; and
(9) for a precision approach runway category I, the existence of an obstacle free zone
when provided.
(b) Strip/Runway End Safety Area/Stopway
(1) Length, width to the nearest metre or foot;
(2) Surface type; and
(3) Arresting system - location (which runway end) and description.
(c) Taxiway
(1) Designation;
(2) Width; and
(3) Surface type.
(d) Apron
(1) Surface type; and
(2) Aircraft stands.
(e) The boundaries of the air traffic control service;
(f) Clearway
(1) length to the nearest metre or foot; and
(2) ground profile.
(g) Visual aids for approach procedures, marking and lighting of runways, taxiways and
aprons, other visual guidance and control aids on taxiways and aprons, including runway
holding positions, intermediate holding positions and stopbars, and location and type of
visual docking guidance systems;
(h) Location and radio frequency of any VOR aerodrome checkpoint;
(i) Location and designation of standard taxi-routes;
(j) Distances to the nearest metre or foot of localiser and glide path elements comprising an
instrument landing system (ILS) or azimuth and elevation antenna of a microwave landing
system (MLS) in relation to the associated runway extremities;
(k) The geographical coordinates of:
(1) each threshold;
(2) appropriate taxiway centre line points; and
(3) each aircraft stand;
are measured and reported to the aeronautical information services in degrees, minutes,
seconds and hundredths of seconds.
STRENGTH OF PAVEMENTS
(a) The bearing strength of a pavement intended for aircraft of apron (ramp) mass greater
than 5 700 kg should be made available using the aircraft classification — pavement
classification number (ACN-PCN) method, by reporting all of the following information:
(1) the pavement classification number (PCN);
(2) pavement type for ACN-PCN determination;
(3) subgrade strength category;
(4) maximum allowable tire pressure category or maximum allowable tire pressure
value; and
(5) evaluation method.
(b) For the purposes of determining the ACN, the behaviour of a pavement should be
classified as equivalent to a rigid or flexible construction;
(c) Information on pavement type for ACN-PCN determination, subgrade strength category,
maximum allowable tire pressure category and evaluation method, should be reported
using the following codes:
(1) Pavement type for ACN-PCN determination:
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