What was found
ENGINE WAS REPORTED RUNNING ROUGH, WAS FOUND TO HAVE A CRACK ON THE CYLINDER HEAD ON #4 CYLINDER. THE SAME PROBLEM WAS FOUND ON ANOTHER ENGINE, SAME TYPE AIRCRAFT, ENGINE AND CYLINDER.
- Difficulty date
- February 25, 2026
- Submitted
- March 10, 2026
- Operation
- General aviation
- Aircraft
- N212BS
- Make and model
- Cessna 172S
- Aircraft serial
- 172S8243
- Aircraft time
- 15,370 hours
- Engine
- Lyc IO360L2A
- Engine time
- 1,070 hours
- Propeller
- Mcauly 1A170E
- System (JASC)
- 7100 · Powerplant System
- Part
- Cylinder Head
- Part number
- SL36006WA20P
- Part serial
- 366000017282
- Condition
- Cracked
- Location
- Engine
- Stage of operation
- TX
- How discovered
- V
- Nature of condition
- E
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.