SDR 96ZZZX577

Service difficulty report · Cylinder · Cessna 421B

Difficulty date
January 10, 1996
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N707SP
Make and model
Cessna 421B
Aircraft serial
421B0411
Engine
Cont GTSIO520H
Part
Cylinder
Part number
646101CN
Condition
Coating Failed
Location
Cylinders 1-6
Stage of operation
IN
Nature of condition
W
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

INSPECTION FOUND CERMINIL CYLINDER PROCESS HAS FAILED. PARTICLES COMING LOOSE IN SMALL PIECES. CONTAMINATION IS PASSING THROUGH ENTIRE OIL SYSTEM. BEARINGS ARE DAMAGED BEYOND FURTHER USE. CAMSHAFT AND LIFTERS ARE DAMAGED. SUBMITTER STATED ALL ACCESSORIES THROUGH WHICH OIL HAS PASSED MUST BE INSPECTED AND/OR REPAIRED.

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