# SDR NI6R201503050024

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 5, 2015
- Submitted: March 10, 2015
- Operation: General aviation
- Filed by: [Neptune Aviation Services Inc, repair station NI6R011N](https://openairdocs.org/faa-repair-station/NI6R011N/neptune-aviation-services-inc.md) (OpenAirDocs)
- Aircraft: [N505SF](https://openairdocs.org/aircraft/N505SF), registered now
- Make and model: Cessna 340A
- Registry model: [Cessna 340A](https://openairdocs.org/model/cessna-340a) (OpenAirDocs)
- Aircraft serial: 340A0261
- Aircraft time: 5,886 hours
- Engine: Cont GTSIO520N
- Engine time: 7,231 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Crankcase
- Part number: TS10520NB
- Part serial: 20834672J
- Condition: Cracked
- Location: Engine
- Part time: 7,231 hours
- Component: Engine, Cont
- Component part number: TS10520NB
- Stage of operation: IN
- How discovered: 9
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NI6R201503050024

## Discrepancy

DURING INVESTIGATION OF LT ENGINE OIL LEAK, A CRACK WAS DISCOVERED IN THE ENGINE CASE OTBD SIDE RUNNING BETWEEN THE NR 2 & NR 4 CYLINDERS.

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