The inability (owing to inaccuracies in the available measuring equipment) of assessing and reporting braking action on a wet or slush-covered runway is a shortcoming that's been known by the UK CAA and a majority of airlines/aircraft operators for some years.
It's also been an issue raised by NATS at some of its Scottish ATC units because there are occasions when it's clear to ATC that a runway is 'contaminated' and so the braking action is probably less than 'good' but - unless reported by a pilot - no report can be issued by ATC even if the airport authority undertakes a braking action assessment.
Discussions have taken place within the CAA and the Airfield Operators' Association (AOA) but thus far, no progress has been made towards a solution.
Therefore, this most unsatisfactory situation continues at all UK airports.
Luton is no exception.
