There have been a couple of F100 crashes, most recently in Kazakhstan. Weather at the time had the temp at -12C, well below the dew point with high probability of clear ice forming. A Palair F100 crashed on takeoff in 1993. Dutch investigators attributed the cause due to ice formation on the wings. A crash at La Guardia was similarly attributed to wing ice.
After the loss of an F100 operated by an Air France subsidiary, the European Aviation Safety Agency mandated the fitting of on-ground wing leading-edge heating systems. EASA noted:
Without being too ghoulish, at least flying to NW WA, ice would be less of an issue.