Narrative:

On the afternoon of jan/fri/93, I took off with 5 passenger from lnn to ytz on an IFR flight plan. I had gotten a standard briefing (WX) from cleveland FSS at approximately XA00 for an XB00 departure and got the usual flight precaution for possible icing in the clouds and precipitation. I then listened more intently for temperature, PIREPS on ice and tops, and current conditions along the route. Although the temperature at lnn was 35 degrees F, there were only 2 reports of ice along the route and both of those were for light rime (as reported by light aircraft). I decided to go based on this information. On climb out through 4000 ft, ice began to accumulate rapidly, and I had to act quickly. Knowing that lake erie, with no obstructions, was 2-3 mi north and the temperatures were above freezing below me, I elected to descend and turn north. I lost contact with cle approach and contacted lnn tower who told me to try eri. I reached the bases at 1800 ft MSL, descended below and cancelled IFR. I proceeded along the lake shore and requested a frequency change to FSS and got it. While talking with cle FSS, I inadvertently entered the eri air traffic area and control zone without clearance to do so. So as to avoid this again, I will pay more attention to temperatures and give them as much credence as PIREPS as to icing conditions.

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Original NASA ASRS Text

Title: AN SMA PLT EXERCISED HIS EMER AUTHORITY AND DSNDED INTO CLR AIR WHEN ENCOUNTERING ICE.

Narrative: ON THE AFTERNOON OF JAN/FRI/93, I TOOK OFF WITH 5 PAX FROM LNN TO YTZ ON AN IFR FLT PLAN. I HAD GOTTEN A STANDARD BRIEFING (WX) FROM CLEVELAND FSS AT APPROX XA00 FOR AN XB00 DEP AND GOT THE USUAL FLT PRECAUTION FOR POSSIBLE ICING IN THE CLOUDS AND PRECIPITATION. I THEN LISTENED MORE INTENTLY FOR TEMP, PIREPS ON ICE AND TOPS, AND CURRENT CONDITIONS ALONG THE RTE. ALTHOUGH THE TEMP AT LNN WAS 35 DEGS F, THERE WERE ONLY 2 RPTS OF ICE ALONG THE RTE AND BOTH OF THOSE WERE FOR LIGHT RIME (AS RPTED BY LIGHT ACFT). I DECIDED TO GO BASED ON THIS INFO. ON CLBOUT THROUGH 4000 FT, ICE BEGAN TO ACCUMULATE RAPIDLY, AND I HAD TO ACT QUICKLY. KNOWING THAT LAKE ERIE, WITH NO OBSTRUCTIONS, WAS 2-3 MI N AND THE TEMPS WERE ABOVE FREEZING BELOW ME, I ELECTED TO DSND AND TURN N. I LOST CONTACT WITH CLE APCH AND CONTACTED LNN TWR WHO TOLD ME TO TRY ERI. I REACHED THE BASES AT 1800 FT MSL, DSNDED BELOW AND CANCELLED IFR. I PROCEEDED ALONG THE LAKE SHORE AND REQUESTED A FREQ CHANGE TO FSS AND GOT IT. WHILE TALKING WITH CLE FSS, I INADVERTENTLY ENTERED THE ERI ATA AND CTL ZONE WITHOUT CLRNC TO DO SO. SO AS TO AVOID THIS AGAIN, I WILL PAY MORE ATTN TO TEMPS AND GIVE THEM AS MUCH CREDENCE AS PIREPS AS TO ICING CONDITIONS.

Data retrieved from NASA's ASRS site as of July 2007 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.