SDR 20010426CW021

Service difficulty report · Cylinder Head

Difficulty date: February 5, 2001
Submitted: April 26, 2001
Operation: General aviation
Aircraft: N90193
Engine: Cont IO520*
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Cylinder Head
Part number: SA52000A20P
Part serial: 52L976947
Condition: Cracked
Location: Engine
Part time: 1,801 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

CYLINDER HEADS CRACKED ON INTAKE SIDE ON EXTERIOR ADJACENT TO INTAKE SEAT. UNLIKE MANY OTHER CRACKED MILLINEUM CYLINDERS THESE WERE ALSO CRACKED ON THE EXHAUST SIDE , VISIBLE FROM OUTSIDE BETWEEN FINS 18 TO 20. SERIAL NUMBERS: (52L976947), 52L976948, 52L976949, 52L976950, 52L976957, 52L976958.