"Back when I used to fly the Shorts 360, had an interesting night due to some severe icing. Took off out of Beckley, WV (BKW) en-route to Louisville, KY (SDF), we encountered severe airframe icing around 8,000 feet. Our departure point was below minimums so we couldn't return to BKW. We tried to climb to 10,000 to get on top of the clouds and icing. we made it to about 9,300 and couldn't climb anymore so we turned around direct to Charleston, WV (CRW). With the unforcast headwinds from the west, we had a groundspeed of about 70-80 kts and were accumulating ice really fast. Shot an ILS approach to minimums in CRW and landed. The icing conditions were not forecast to be that bad and yes this plane is certified into known icing."
YouTube - Shorts 360 icing