# SDR 20010426CW021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 5, 2001
- Submitted: April 26, 2001
- Operation: General aviation
- Aircraft: [N90193](https://openairdocs.org/aircraft/N90193), registered now
- Engine: Cont IO520*
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20010426CW021

## Discrepancy

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.

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