ED Decision 2017/021/R
(a) The safety objective of the grading of a taxiway strip is to reduce the risk of damage to an aircraft accidentally running off the taxiway.
(b) The centre portion of a taxiway strip should provide a graded area to a distance from the centre line of the taxiway of not less than that given by the following tabulation:
(1) 10.25 m where the OMGWS is up to but not including 4.5 m;
(2) 11 m where the OMGWS is 4.5 m up to but not including 6 m;
(3) 12.50 m where the OMGWS is 6 m up to but not including 9 m;
(4) 18.50 m where the OMGWS is 9 m up to but not including 15 m, where the code letter is D;
(5) 19 m where the OMGWS is 9 m up to but not including 15 m, where the code letter is E;
(6) 22 m where the OMGWS is 9 m up to but not including 15 m, where the code letter is F.
[Issue: ADR-DSN/4]
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