Narrative:

We were conducting a flight at 6;000 ft in cruise flight. We were not accumulating ice due to a temperature inversion that was in place over the region. As we approached [destination] we set up for the approach. Anticipating icing conditions I initiated my descent later than normal to reduce our exposure in icing conditions. Over about [a] 10 minute [period] we encountered what appeared to be severe icing. As we turned final I blew the boots; however none of the ice was removed from the airplane. I briefed [the first officer] that I was going to fly the approach at a higher airspeed to [account] for the ice on the aircraft. I crossed the threshold at about 120 kts and noted the aircraft stalled as I began to flare at about 115 knots. We hit the ground rather firmly and bounced back into the air. I initiated a go-around because I was concerned that I would not be able to successfully stop the aircraft on the remaining runway surface with the increased airspeed and weight on the aircraft. After establishing a positive rate we retracted the gear and climbed away from the runway. Once we encountered the inversion we were able to blow the boots and the ice was removed from the aircraft. We decided that it would be best to return to [departure airport] instead of attempting another approach in those conditions. We landed without further incident.

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Original NASA ASRS Text

Title: Cessna 402C Captain reported returning to the departure airport after experiencing significant ice accumulation on approach to their destination.

Narrative: We were conducting a flight at 6;000 ft in cruise flight. We were not accumulating ice due to a temperature inversion that was in place over the region. As we approached [destination] we set up for the approach. Anticipating icing conditions I initiated my descent later than normal to reduce our exposure in icing conditions. Over about [a] 10 minute [period] we encountered what appeared to be severe icing. As we turned final I blew the boots; however none of the ice was removed from the airplane. I briefed [the First Officer] that I was going to fly the approach at a higher airspeed to [account] for the ice on the aircraft. I crossed the threshold at about 120 kts and noted the aircraft stalled as I began to flare at about 115 knots. We hit the ground rather firmly and bounced back into the air. I initiated a go-around because I was concerned that I would not be able to successfully stop the aircraft on the remaining runway surface with the increased airspeed and weight on the aircraft. After establishing a positive rate we retracted the gear and climbed away from the runway. Once we encountered the inversion we were able to blow the boots and the ice was removed from the aircraft. We decided that it would be best to return to [departure airport] instead of attempting another approach in those conditions. We landed without further incident.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.