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ICAO AERODROME STANDARDS
Page 17
Code Element 1:
Code number "3"
Aeroplane reference field length "1200 m up to but not including 1800 m"
Code Element 2:
Code letter "C"
Wing span "24 m up to but not including 36 m"
Outer main gear wheel span "6 m up to but not including 9 m"
Page 28
The width of a runway shall be not less than the appropriate dimension specified in the following tabulation:
Code number 3
Code letter A: 30m
Code letter B: 30m
Code letter C: 30m
Code letter D: 45m