# SDR CA001016004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2000
- Submitted: January 22, 2001
- Operation: Air carrier
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft time: 4,827 hours
- Engine: Cont TSIO520VB
- Propeller: Mcauly 3AF32C505
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Valve Spring
- Condition: Broken
- Location: Nr 2 Engine
- Part time: 2,214 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/CA001016004

## Discrepancy

(CAN) DURING A NR 2 ENGINE CYLINDER CHANGE DUE TO A CRACK THE INTAKE VALVE SPRING INNER AND OUTER WERE FOUND BROKEN. NR 4 CYLINDER ROCKER COVER REMOVED TO ASSIST IN ASEMBLING ROCKER ARM PIN. NOTICED INTAKE OUTER VALVE SPRING BROKEN. NR 6 CYLINDER ROCKER COVER REMOVED, INTAKE OUTER VALVE SPRING BROKEN. REMOVED THE REMAINING 9 ROCKER COVERS AND FOUND NO VALVE SPRINGS BROKEN.

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