ON A FREEZING JANUARY EVENING IN 2016, A CIRRUS SR22T APPROACHED GREENE COUNTY REGIONAL AIRPORT (I19) NEAR DAYTON, OHIO, ITS HOME FIELD, AFTER A 100 NM IFR HOP FROM INDIANAPOLIS.
Conditions at the airport were VMC, with a 1,700-foot ceiling, 10-mile visibility and a 9-knot wind gusting to 14 and varying from 240 to 330 degrees. The sun had just set, and the temperature on the ground was 32 degrees Fahrenheit.
The 2,000-hour airline transport pilot, 33, descended from his cruising altitude of 9,000 feet and used the GPS approach for Runway 7, intending to circle to Runway 25. Passing through 4,000 feet, he switched on the anti-icing system, which on the Cirrus consists of a porous metal leading edge from which an ethylene glycol fluid with a low freezing…
