# SDR CA990111001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Cessna 172P
- Registry model: [Cessna 172P](https://openairdocs.org/model/cessna-172p) (OpenAirDocs)
- Engine: Lyc O320D2J
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Stud
- Part number: 5015
- Condition: Broken
- Location: Nr 1 Cylinder
- Stage of operation: TX
- Nature of condition: E
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA990111001

## Discrepancy

(CAN) DURING TAXI, A VIBRATION WAS FELT FROM THE ENGINE.  INSPECTION AFTER RETURN TO RAMP FOUND ONE .50 INCH STUD AND THREE .3750 STUDS AT NR 1 CYLINDER BROKEN.  ALL CYLINDERS WERE REMOVED AND INSPECTED FOR CRACKS AND CONFORMITY.  ALL CYLINDERS WERE SERVICEABLE AND REINSTALLED WITH NEW GASKETS. THE ENGINE WAS GROUND RUN AND TEST FLOWN SERVICEABLE.

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