# SDR HYIA20170208002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 7, 2017
- Submitted: February 8, 2017
- Operation: Air carrier
- Aircraft: N300SN
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0060
- Aircraft time: 22,159 hours, 11,921 cycles
- Engine: Cont TSIO520VB
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Valve Guide
- Part number: 658552A2
- Part serial: AC15LA592
- Condition: Damaged
- Location: Nr 5 Cylinder
- Part time: 877 hours
- Component: Cylinder, Cont
- Component part number: 658552A2
- Stage of operation: TO
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HYIA20170208002

## Discrepancy

PILOT REPORTED ENGINE MANIFOLD PRESSURE ERRATIC DURING TAKE OFF ROLL. MAINTENANCE INSPECTED AND FOUND THE EXHAUST VALVE GUIDE ON THE NR 5 CYLINDER DAMAGED.

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