What was found
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.
- Difficulty date
- March 5, 2025
- Submitted
- March 5, 2025
- Operation
- General aviation
- Aircraft
- N343DM
- Make and model
- Mooney M20J
- Engine
- Lyc IO360A3B6D
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Rocker Cover
- Part number
- 68795
- Condition
- Cracked
- Location
- Engine
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.