Narrative:

While enroute through class C on a training flight I noticed my engine running rough with an elevated [cht] on number 2 cylinder. I notified that I was going to return to [the] airport and started left turn to reverse course. At that time I heard a pop noise and the engine quit producing power. I declared an emergency [and] glided to an uneventful landing at [the] airport.

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Original NASA ASRS Text

Title: C172 pilot reported engine failure on a training flight. He glided back to the airport for a safe landing.

Narrative: While enroute through Class C on a training flight I noticed my engine running rough with an elevated [CHT] on Number 2 cylinder. I notified that I was going to return to [the] airport and started left turn to reverse course. At that time I heard a pop noise and the engine quit producing power. I declared an emergency [and] glided to an uneventful landing at [the] airport.

Data retrieved from NASA's ASRS site as of July 2013 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.