# SDR 98ZZZX3419

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N2756V](https://openairdocs.org/aircraft/N2756V), registered now
- Make and model: Cessna 177RG
- Registry model: [Cessna 177RG](https://openairdocs.org/model/cessna-177rg) (OpenAirDocs)
- Aircraft serial: 177RG0682
- Engine: Lyc IO360A1B6
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Head
- Part number: LW12993
- Condition: Separated
- Location: Cylinder Nr 1
- Part time: 2,660 hours
- Stage of operation: CL
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX3419

## Discrepancy

PILOT REPORTED FAILURE OCCURRED AFTER TAKEOFF WHILE TURNING DOWN WIND AT 1,100 FEET AGL.  A LOUD BAG HEARD FROM THE ENG WITH SMOKE AND OIL COVERING W/S FOLLOWED BY A LOSS IN OIL PRESSURE.  ENG SHUT DOWN, UNEVENTFUL DEAD STICK LANDING MADE.  INVEST REVEALED A HOLE IN THE COWLING AND ACFT COVERED WITH OIL FROM ENG.  REMOVED TOP COWLING TO FIND NR 1 CYL HEAD SEPARATED FROM CYL BARREL.  ENG HAS 894.0 HRS SMOH WITH CERMICROME CYL.  A COMP TEST, 20 HRS BEFORE FAILURE OCCURRED, WAS 72/80.  NO INDICATION OF LEAKAGE; CYL HEAD APPEARED CRACKED ABOUT HALF-WAY AROUND CYL BARREL FOR SOME TIME.  FAILURE OCCURRED WHERE CYL HEAD THREADS ON TO BARREL.  RECOMMEND FAA INVESTIGATE.  SUSPECT CAUSE TO BE MFG OR CYL O/H PROCESS.

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