Originally Posted by BOAC
I have seen lots of 'figures' quoted for the 320 on 'wet' but has anyone a 'slippery' LDR for that day? I saw Rippa quoting AB in #355, but were they talking 'slippery' or just 'wet'?
Nobody has offered a source for the "Airbus comment", but it would have to be for "wet", not "contaminated", because the contaminated (1/4" water) figures would leave only half that (<300 feet). The Airbus FCOM doesn't appear to use the term "slippery runway" in the ALD tables referenced in the thread, but the closest would be "covered with ice". That however yields lenghts in the 3500 meter range.
Then there is also the issue which standard the Airbus statement uses for calculating the 200 meters to spare figure, it could also include the RSA/stopway in the end, which apparently is about 100 m long (from this
ADC).
I guess it goes down to analysing what exact friction coefficients were used in the demonstrations which the data in the tables was derived from.