Narrative:

Took off from ads planning 3;500 ft cruise altitude when clear of dfw restrictions. With dog-leg around tki airspace pending attained altitude when transitioning the D [airspace]. First cold weather (heater) use of season; while adjusting temperature and at the same time programming GPS; smelled strong acrid odor in cabin. Immediately turned off heater and started checking for hot or burning objects. [I] forgot about GPS and airspace issues while trying to determine if I was on fire. Smell finally abated; and I later found some dried 'goop' in the heater duct; presumably from a windshield replacement completed earlier this year. Embarrassed by distraction but things happened so quickly that I was totally focused on primary task and didn't think about airspace issues until much later.

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Original NASA ASRS Text

Title: A Cessna pilot became distracted by a burning smell after turning on his heater and transited TKI Class D airspace but did not realize his error until after landing.

Narrative: Took off from ADS planning 3;500 FT cruise altitude when clear of DFW restrictions. With dog-leg around TKI airspace pending attained altitude when transitioning the D [airspace]. First cold weather (heater) use of season; while adjusting temperature and at the same time programming GPS; smelled strong acrid odor in cabin. Immediately turned off heater and started checking for hot or burning objects. [I] forgot about GPS and airspace issues while trying to determine if I was on fire. Smell finally abated; and I later found some dried 'goop' in the heater duct; presumably from a windshield replacement completed earlier this year. Embarrassed by distraction but things happened so quickly that I was totally focused on primary task and didn't think about airspace issues until much later.

Data retrieved from NASA's ASRS site as of April 2012 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.