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(a) An aerodrome reference code — code number and letter — which is selected for aerodrome planning purposes must be determined in accordance with the characteristics of the aeroplane for which an aerodrome facility is intended.
(b) The aerodrome reference code numbers and letters must have the meanings assigned to them in Table B-1.
(c) The code number for element 1 must be determined from column 1 of Table B-1 selecting the code number corresponding to the highest value of the aeroplane reference field lengths of the aeroplanes for which the runway is intended.
Note. — The determination of the aeroplane reference field length is solely for the selection of a code number and is not intended to influence the actual runway length provided.
(d) The code letter for element 2 must be determined from column 3 of Table B-1 by selecting the code letter which corresponds to the greatest wingspan, or the greatest outer main gear wheel span, whichever gives the higher code letter for the aeroplanes that the runway is intended to serve.
| Code element 1 | Code element 2 | |||
|---|---|---|---|---|
| Code number | Aeroplane reference field length | Code letter | Wingspan | Outer main gear wheel span |
| (1) | (2) | (3) | (4) | (5) |
| 1 | Less than 800 m | A | Up to but not including 15 m | Up to but not including 4.5 m |
| 2 | 800 m up to but not including 1200 m | B | 15 m up to but not including 24 m | 4.5 m up to but not including 6 m |
| 3 | 1200 m up to but not including 1800 m | C | 24 m up to but not including 36 m | 6 m up to but not including 9 m |
| 4 | 1800 m and over | D | 36 m up to but not including 52 m | 9 m up to but not including 14 m |
| E | 52 m up to but not including 65 m | 9 m up to but not including 14 m | ||
| F | 65 m up to but not including 80 m | 14 m up to but not including 16 m | ||
Note: The outer main gear wheel span in column 5 is the distance between the outside edges of the main landing gear wheels.
