What was found
DURING NORMAL ENGINE OPERATION, NOTICED OIL LEAK ON FRONT OF ENGINE. AFTER CLEANING AND INSPECTION, FOUND THE FRONT THROUGH-STUD BROKEN. POSSIBLE CAUSE COULD BE IMPROPER HARDENING OF THE BOLT. (X)
- Difficulty date
- March 6, 2000
- Submitted
- April 3, 2000
- Operation
- General aviation
- Aircraft
- N421LH
- Make and model
- Cessna 421C
- Aircraft serial
- 421C1207
- Engine
- Cont GTSIO520N
- System (JASC)
- 8530 · Reciprocating Engine Cylinder Section
- Part
- Stud
- Condition
- Failed
- Location
- Engine
- Part time
- 128 hours
- Component
- Engine
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- K
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.