SDR CA960328009

Service difficulty report · Camshaft · Cessna A188B

Difficulty date: February 28, 1996
Submitted: March 26, 2000
Operation: Air carrier
Make and model: Cessna A188B
Engine: Cont IO550*
System (JASC): 8520 · Reciprocating Engine Power Section
Part: Camshaft
Condition: Spalled
Location: Engine
Part time: 162 hours
Stage of operation: IN
Nature of condition: O
Precautionary procedure: K

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

What was found

(CAN) DURING INSPECTION AND UPON DISMANTLING, #3 & #4 INTAKE LOBES, #5 EXHAUST LOBE, AND #5 & #6 INTAKE LOBES ON CAMSHAFT WERE SPALLED. TWO LOBES WERE SPALLED OVER ENTIRE FACE AND TWO WERE SPALLED ONLY IN THE CENTRE. TWO LIFTERS WERE CORRODED BADLY. ALL MAIN BEARING INSERTS AND ALL CONNECTING ROD BEARING INSERTS WERE METAL CONTAMINATED.

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