SDR AOC04001

Service difficulty report · Cylinder · Cessna U206G

Difficulty date
July 12, 2004
Submitted
July 27, 2004
Operation
General aviation
Aircraft
N9802Z
Make and model
Cessna U206G
Aircraft serial
U20606667
Engine
Cont IO520F
Engine time
23 hours
Part
Cylinder
Part number
AEC631397SN2A
Condition
Damaged
Location
Engine
Part time
23 hours
Stage of operation
CR
How discovered
9
Nature of condition
J
Precautionary procedure
O

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

What was found

FOLLOWING SEVERAL WRITE UPS CONCERNING HIGH CYLINDER TEMP, THE CYLINDERS WERE REMOVED AFTER EXTENSIVE TROUBLESHOOTING REVEALED NO DEFECT. UPON INSPECTION OF THE CYLINDERS, IT WAS NOTED THAT THREE CYLINDERS HAD UNUSUAL CIRCULAR MARKS ON THE CYLINDER WALLS. ONE CYLINDER HAD CRACKING IN THE NICKEL PLATING AROUND ONE OF THE MARKS. NEW CONTINENTAL STEEL CYLINDERS WERE INSTALLED AND CYLINDER TEMP RETURNED TO NORMAL. REMOVED CYLINDERS SENT BACK TO MANUFACTURER.

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