Narrative:

While flying on an IFR flight; I encountered a complete electrical system failure while attempting to comply with a radar vector instructed by mke approach. After noticing that the ammeter was malfunctioning; I was unable to transmit on my radio and acknowledge the descent to 6;000 ft and fly 190 degrees. In the interest of safety; and being very concerned with the situation; I chose to shut the radios and all electrical system functions off. I returned VFR and a mechanic will address the problem. After landing without any further incidents; I was going to call mke [approach] and explain what happened. They left me a voice mail and I promptly called them to explain the situation and the actions which I took. Since it was a sudden failure; it's difficult to suggest what I would do different; but I certainly would land as soon a practical and notify ATC per the regulation.

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Original NASA ASRS Text

Title: A C182 pilot experienced complete electrical failure at 8;000 FT on an IFR flight plan in VMC. Without communications he elected to return to his departure airport.

Narrative: While flying on an IFR flight; I encountered a complete electrical system failure while attempting to comply with a RADAR vector instructed by MKE Approach. After noticing that the ammeter was malfunctioning; I was unable to transmit on my radio and acknowledge the descent to 6;000 FT and fly 190 degrees. In the interest of safety; and being very concerned with the situation; I chose to shut the radios and all electrical system functions off. I returned VFR and a Mechanic will address the problem. After landing without any further incidents; I was going to call MKE [Approach] and explain what happened. They left me a voice mail and I promptly called them to explain the situation and the actions which I took. Since it was a sudden failure; it's difficult to suggest what I would do different; but I certainly would land as soon a practical and notify ATC per the regulation.

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.