# SDR 2025FA0000149

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 5, 2025
- Submitted: March 5, 2025
- Operation: General aviation
- Aircraft: [N343DM](https://openairdocs.org/aircraft/N343DM), registered now
- Make and model: Mooney M20J
- Registry model: [Mooney M20J](https://openairdocs.org/model/mooney-m20j) (OpenAirDocs)
- Engine: Lyc IO360A3B6D
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Rocker Cover
- Part number: 68795
- Condition: Cracked
- Location: Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2025FA0000149

## Discrepancy

ROCKER BOX COVER ON NUMBER 5 CYLINDER HEAD LEAKING OIL THROUGH HAIRLINE CRACK AT THE STAMPING MARK.  THE LINE THAT UNDERLINES THE STAMPED "LYCOMING" LETTERS HAS A CRACK ALLOWING SLOW SEEPAGE OF ENGINE OIL AT ALL TIMES.

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