Narrative:

Departure from ZZZ on IFR flight plan. Climbing through 3000 ft and speaking with departure. Advised required deviation around clouds for possible icing; there was a 10 mi wide hole up to our filed 11000 ft altitude above and clear of the layers all the way to ZZZ1. ATC heard this radio call. Attempted second call but no response except for a response back from a cherokee in the area. Third call required a statement of the deviation 30 degrees to the right to escape light icing in a climb attitude. ATC then advised me to call their manager upon arrival at ZZZ1. I believed at this point that ATC was not hearing the radio calls or did not fully understand how imperative it is to escape icing immediately. You do not keep your hand over the fire and just wait for it to get hotter before you take it away. Called the station manager at the phone number given. He concurred with the tapes that my radio calls were never received. Therefore; they were not aware of why our aircraft continued to deviate off course; even though they did receive the first call. This was a situation regarding safety of aircraft with reference to climbing through icing conditions. Upon the first request to ATC to divert around clouds because of icing my aircraft should have been given priority over any other aircraft in the area not reporting this deadly WX phenomenon.

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Original NASA ASRS Text

Title: AN IFR SR22 ENCOUNTERING ICING ATTEMPTED TO GET DEV CLRNC. ATC DID NOT HEAR THE REQUESTS SO THE PLT DEVIATED AS NECESSARY ALARMING ATC.

Narrative: DEP FROM ZZZ ON IFR FLT PLAN. CLBING THROUGH 3000 FT AND SPEAKING WITH DEP. ADVISED REQUIRED DEV AROUND CLOUDS FOR POSSIBLE ICING; THERE WAS A 10 MI WIDE HOLE UP TO OUR FILED 11000 FT ALT ABOVE AND CLR OF THE LAYERS ALL THE WAY TO ZZZ1. ATC HEARD THIS RADIO CALL. ATTEMPTED SECOND CALL BUT NO RESPONSE EXCEPT FOR A RESPONSE BACK FROM A CHEROKEE IN THE AREA. THIRD CALL REQUIRED A STATEMENT OF THE DEV 30 DEGS TO THE R TO ESCAPE LIGHT ICING IN A CLB ATTITUDE. ATC THEN ADVISED ME TO CALL THEIR MGR UPON ARR AT ZZZ1. I BELIEVED AT THIS POINT THAT ATC WAS NOT HEARING THE RADIO CALLS OR DID NOT FULLY UNDERSTAND HOW IMPERATIVE IT IS TO ESCAPE ICING IMMEDIATELY. YOU DO NOT KEEP YOUR HAND OVER THE FIRE AND JUST WAIT FOR IT TO GET HOTTER BEFORE YOU TAKE IT AWAY. CALLED THE STATION MGR AT THE PHONE NUMBER GIVEN. HE CONCURRED WITH THE TAPES THAT MY RADIO CALLS WERE NEVER RECEIVED. THEREFORE; THEY WERE NOT AWARE OF WHY OUR ACFT CONTINUED TO DEVIATE OFF COURSE; EVEN THOUGH THEY DID RECEIVE THE FIRST CALL. THIS WAS A SITUATION REGARDING SAFETY OF ACFT WITH REF TO CLBING THROUGH ICING CONDITIONS. UPON THE FIRST REQUEST TO ATC TO DIVERT AROUND CLOUDS BECAUSE OF ICING MY ACFT SHOULD HAVE BEEN GIVEN PRIORITY OVER ANY OTHER ACFT IN THE AREA NOT RPTING THIS DEADLY WX PHENOMENON.

Data retrieved from NASA's ASRS site as of January 2009 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.