Posted for "Allan Scherr" <allan.scherr@riverrun.com>:

There are two LNC4's, with body work and paint done by the same guy, one with static wicks– the other without.  Both have leading edge pitting after flying through rain.  The one without the wicks flew at about 210 KIAS through a brief level 2 rain shower and showed erosion of the leading edge on both the wings and the horizontal stab.  The worst of it were two pits about ½" across down to the carbon on the wing leading edge about 15' from the fuselage.  Most of the erosion was much smaller (1/8" in diameter).  All of the pits have a smooth surface.  The plane with the static wicks shows similar.

Any ideas as to cause or cure?