A320 IAE Eng Inlet Polished?
Today I had an aircraft with a shiny/polished inlet on Eng1 and a normal/dull inlet on Eng2. Deep inside the dark recesses of my memory I seem to recall something about never polishing the inlets and that the dull finish is part of the anti-ice certification for the IAE2500. Does this ring a bell to anyone?
I know this was absolutely true of the PW305A on the Lear 60 (had a well-meaning lineman ground a plane when he took a polishing wheel to the engines. Big $$...)
Thoughts? References? Therapy?