# SDR 98ZZZX441

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 14, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N1835M](https://openairdocs.org/aircraft/N1835M), registered now
- Make and model: Cessna 182P
- Registry model: [Cessna 182P](https://openairdocs.org/model/cessna-182p) (OpenAirDocs)
- Aircraft serial: 18264459
- Engine: Cont O470S
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder Assy
- Condition: Worn
- Location: Engine
- Part time: 137 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX441

## Discrepancy

ENGINE:  137 HOURS SOH (3-20-96).  MODIFIED PER STC SE4985NM.  NEW TCM CYLINDER ASSYS INSTALLED AT OVERHAUL AND MODIFICATION.  COMP TEST:  NR 1 - 55/80.  NR 2 - 25/80.  NR 3 - 75/80.  NR 4 - 70/80.  NR 5 - 75/80.  NR 6 - 72/80.  REMOVED ALL SIX CYLINDERS.  ALL EXHAUST VALVES LOOSE IN GUIDES.  VISUAL INSPECTION OF INTAKE VALVES AND SEATS SHOWED POOR SEALING OF INTAKE VALVES ALSO (POOR  VALVE MACHINING BY TEM?).

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