no braking action(reaction)at all is true general definition of 'slippery'..
Keep in mind,that although one reffers to'slippery'in the everyday concept,there is no reference to 'slippery' requirements
during 'certification'-ergo if one is on a slippery runway,there is nothing to refer to..Contaminated Runway is any runway with more that 3mm of standing water,slush,snow etc
