AMC1 ADR.OPS.A.065(b);(c) Reporting of the runway surface condition
ED Decision 2021/003/R
SIGNIFICANT CHANGES
A change in the runway surface condition used in the RCR should be considered significant whenever there is any:
(a) change in the RWYCC;
(b) change in the contaminant type;
(c) change in reportable contaminant coverage according to Table 1;
(d) change in contaminant depth according to Table 2; and
(e) other information, for example a SPECIAL AIR-REPORT of runway braking action, which according to assessment techniques used, is known to be significant.
-
-
-
Assessed per cent
Reported per cent
10-25
25
26-50
50
51-75
75
76-100
100
-
-
Table 1: Percentage of coverage for contaminants
-
Contaminant
Valid values to be reported
Significant change
STANDING WATER
04, then assessed value
3 mm
SLUSH
03, then assessed value
3 mm
WET SNOW
03, then assessed value
5 mm
DRY SNOW
03, then assessed value
20 mm
Table 2: Depth assessments for contaminants
Note 1: For STANDING WATER, 04 (4 mm) is the minimum depth value at and above which the depth should be reported. From 3 mm and below, the runway third should be considered WET.
Note 2: For SLUSH, WET SNOW and DRY SNOW, depths up to and including 3 mm should be reported as 03 (3 mm).
Note 3: Above 4 mm for STANDING WATER and above 3 mm for SLUSH, WET SNOW and DRY SNOW, an assessed value should be reported and a significant change relates to the observed change from this assessed value.