# SDR CA010313017

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 2001
- Submitted: March 13, 2001
- Operation: General aviation
- Make and model: Beech 76
- Registry model: [Beech 76](https://openairdocs.org/model/beech-76) (OpenAirDocs)
- Aircraft time: 10,352 hours
- Engine: Lyc O360A1G6D
- System (JASC): [7721 · Cylinder Head Temperature (CHT) Indicating System](https://openairdocs.org/jasc/7721)
- Part: Spark Plug
- Part number: RHM38E
- Condition: Damaged
- Location: Engine
- Part time: 300 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA010313017

## Discrepancy

(CAN) IN CRUISE PILOT REPORT RT ENGINE SURGING, THEN COMPLETELY ROUGH RUNNING. ENGINE SHUTDOWN, AIRCRAFT LANDED SAFELY. COMPRESSION TEST REVEALED ONE WEAK CYLINDER 50/80 PSI. BOTH SPARK PLUGS IN THAT CYLINDER SHORTED DUE TO BEING PEENED OVER BY FOREIGN OBJECT BOUNCING BACK AND FORTH IN CYLINDER. SUSPECT CERAMIC PIECE FROM A PLUG CAME OFF AND DID DAMAGE, HOWEVER PIECE NOT FOUND, NEW CYLINER ASSEMBLY INSTALLED, SPARK PLUGS ARE RECONDITIONED IN HOUSE USING CHAMPION PLUG CLEANER/TESTER.

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