What was found
CYLINDER NR 4 ROCKER SHAFT BUSINGS IMPROPER INTERFERENCE FIT WITH ROCKER SHAFT. DEFECT FOUND DURING DISASSEMBLY PHASE OF OVERHAUL WHILE ATTEMPTING TO REMOVE ROCKER SHAFT FROM CYLINDER. PROBABLE CAUSE IS IMPROPER MFG. (K)
- Difficulty date
- October 29, 2009
- Submitted
- November 20, 2009
- Operation
- General aviation
- Aircraft
- N453ER
- Make and model
- Cessna 172S
- Aircraft serial
- 172S10500
- Engine
- Lyc IO360L2A
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Bushing
- Part number
- 66610
- Condition
- Inaccurate
- Location
- Nr 4 Cyl Rocker
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.