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A SR20 flight instructor reported a severe engine vibration in cruise that resulted in a return to the departure airport. It was later discovered that a cylinder valve was broken.
| Attributes | |
| ACN | 1350928 |
| Time | |
| Date | 201604 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | SR20 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Component | |
| Aircraft Component | Engine |
| Person 1 | |
| Function | Instructor Pilot Not Flying |
| Qualification | Flight Crew Commercial Flight Crew Flight Instructor |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
On engine start and run up; no abnormalities observed. Once in cruise flight; engine began to shake badly; power indications seemed normal; cht & egt temperatures showed normal. PIC contacted approach and returned to [departure airport].
Original NASA ASRS Text
Title: A SR20 flight instructor reported a severe engine vibration in cruise that resulted in a return to the departure airport. It was later discovered that a cylinder valve was broken.
Narrative: On engine start and run up; no abnormalities observed. Once in cruise flight; engine began to shake badly; power indications seemed normal; CHT & EGT temperatures showed normal. PIC contacted approach and returned to [departure airport].
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.