Hi John! (M)
I take your point...better 26 mm contaminant than 4mm, due to increased braking. Why is the limit at 13mm? Why not 8 feet,when braking action is sooo much better?
Potential Captain's announcement: "Sorry for the delay; we have inadequate runway contaminant; if it snows another 8 mm, we'll be ok for takeoff; til then, we must endure further delay."
I still say: "Wait for the plows; no plows, no go!" If the the FAA stands by the figures. ok. Until then, I understand the meaning of 'Information Only', only too well. It means, "If I trust the figures provided, and have an 'incident', I've just provided x number of lawyers with a steady income for x months, as well as destroying my career." Truly a fool's choice.
SS