Narrative:

Initial cross-country solo. Conducted thorough preflight; including inspection of fuel tanks; fuel sump; and oil levels. No issues observed. Conducted full-power lean and run-up before takeoff- normal magneto drop and carb heat drop. Departed and headed straight to the transition. Frequency change approved approximately 3 miles out; contacted approach and received squawk code. At approximately 3800-4000 msl; engine began running very rough and experienced loss of approx. 200 rpm. Heavy vibrations from engine; visible shaking from cowling; and very loud popping sounds from engine.immediately changed course back contacted tower; informing them of current situation. Tower cleared me for left base for runway xx. Intermittent roughness and occasional temporary rpm drops of up to 50 rpm continued until shutdown; especially at high power settings. Taxi back to parking under own power- informed tower further assistance was not required. Preformed standard shut down; experienced a slight burning odor from the engine.

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Original NASA ASRS Text

Title: C172 student pilot experienced a partial power loss while climbing out. They returned to the departure airport and landed without incident.

Narrative: Initial cross-country solo. Conducted thorough preflight; including inspection of fuel tanks; fuel sump; and oil levels. No issues observed. Conducted full-power lean and run-up before takeoff- normal magneto drop and carb heat drop. Departed and headed straight to the transition. Frequency change approved approximately 3 miles out; contacted approach and received squawk code. At approximately 3800-4000 msl; engine began running very rough and experienced loss of approx. 200 rpm. Heavy vibrations from engine; visible shaking from cowling; and very loud popping sounds from engine.Immediately changed course back contacted tower; informing them of current situation. Tower cleared me for left base for Runway XX. Intermittent roughness and occasional temporary rpm drops of up to 50 rpm continued until shutdown; especially at high power settings. Taxi back to parking under own power- informed tower further assistance was not required. Preformed standard shut down; experienced a slight burning odor from the engine.

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.