SDR CA090629001

Service difficulty report · Cylinder Head · Cessna 172K

Difficulty date: June 24, 2009
Submitted: August 3, 2009
Operation: General aviation
Make and model: Cessna 172K
Aircraft time: 3,551 hours
Engine: Lyc O320E2D
Propeller: Mcauly 1A175ATM
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Cylinder Head
Part number: AEL65102
Condition: Cracked
Location: Engine
Part time: 760 hours
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.

What was found

(CAN) INITIALLY FOUND ALUMINUM SHAVINGS IN OIL SCREEN, CYL NR 3 FOUND AT LOW COMPRESSION 20/80. CYLINDER ASSY REMOVED AND FOUND PISTON BROKEN BETWEEN THE TOP 2 RINGS, CREATING THE SHAVINGS. ALSO, FOUND CYLINDER HEAD CRACK STARTING NEAR SPARK PLUG HOLE.

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