ED Decision 2021/003/R
DEMONSTRATION OF CAPABILITY TO ESTABLISH THE RUNWAY SURFACE CONDITION IN ACCORDANCE WITH A GIVEN RUNWAY CONDITION CODE
The statistical level of confidence is established by analysing data obtained from aeroplane operators and data from aerodrome operators. The analysis is done by the aerodrome operator.
The experienced RWYCC is compared with the RWYCC reported by the aerodrome operator. An analysis is performed to calculate the statistical level of confidence for the number of landings when the reported RWYCC was deemed the same as or better than the experienced RWYCC.
To obtain statistical significance, a representative number of landings on a winter-contaminated surface prepared such as intended to benefit from the improved braking action used in the demonstration should be as large as possible, but not less than 30.
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