LASER DE-ICING and Asymmetric TurboProp Stalling
The LASER ice-detection and DE-Icing idea sounds as though it would work.
I am more interested in whether the fact that prop rotation direction (being the same on both port and starboard wings) and exhaust positioning could induce a very L&R asymmetrically iced airfoil on both mainplane and tailplane in freezing rain conditions.
It seems to me that whenever these type accidents occur, the fingers of scorn quickly point at the dummies who allowed the situation to develop and/or kept the autopilot plugged in and failed to notice the pitch trim autotrimming itself into an accident.
But what if the icing does build up very asymmetrically and quite fast in rain-ice/freezing rain/SCDD's ? That's supercooled drizzle droplets by any other name. Only someone who's been caught at intermediate levels in a turboprop flying along a warm front at the wrong height would have a real grip on just how fast you can accumulate. It sounds quite logical to me that the icing will take up a different concentration (thickly nacelle inboard on the port side and thickly nacelle-outboard on the starboard side) and that that spanwise distribution of lift will generate a surprisingly strong breakaway roll once the first wing (normally RHS) reaches its much reduced stalling angle.
But no doubt it's something that shall remain a mystery until after the next pax-batch meet their icing-induced fate.