Narrative:

VFR pattern work at cpk; just turned left crosswind. Minor updraft with turbulence; loud bang and pitch down moment. Regained control of aircraft; returned to ZZZ1 (home base). Upon post flight; noticed a 4 inch dent on leading edge of right horizontal stabilizer approximately 9 inches from root. Scratch marks evident inside concavity and adjacent (medial) to dented concavity. No red discoloration noted; no organic tissue noted anywhere on aircraft. 100% certain an impact occurred in the pattern at chesapeake; do not believe it was a bird strike.

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Original NASA ASRS Text

Title: Cessna pilot reported aircraft was struck by an object during initial climb causing a dent in aircraft.

Narrative: VFR pattern work at CPK; just turned left crosswind. Minor updraft with turbulence; loud bang and pitch down moment. Regained control of aircraft; returned to ZZZ1 (home base). Upon post flight; noticed a 4 inch dent on leading edge of right horizontal stabilizer approximately 9 inches from root. Scratch marks evident inside concavity and adjacent (medial) to dented concavity. No red discoloration noted; no organic tissue noted anywhere on aircraft. 100% certain an impact occurred in the pattern at Chesapeake; do not believe it was a bird strike.

Data retrieved from NASA's ASRS site 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.