# SDR 2013FA0000024

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2013
- Submitted: January 15, 2013
- Operation: General aviation
- Aircraft: [N738JX](https://openairdocs.org/aircraft/N738JX), registered now
- Make and model: Cessna 172N
- Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (OpenAirDocs)
- Aircraft serial: 17270024
- Aircraft time: 9,113 hours
- Engine: Lyc O320H2AD
- Engine time: 4,670 hours
- System (JASC): [7810 · Engine Collector/Tailpipe/Nozzle](https://openairdocs.org/jasc/7810)
- Part: Seal
- Part number: LW13792
- Condition: Leaking
- Location: Heat Exchanger
- Part time: 1,672 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2013FA0000024

## Discrepancy

FRONT CRANKSHAFT OIL SEAL DETERMINED TO BE LEAKING, AND ALLOWING OIL TO DRIP INTO CABIN HEAT EXCHANGER ON MUFFLER, WHICH WAS THE SOURCE OF A SMOKE ODOR.  SEAL REPLACED AND ACFT WAS GROUND RUN AND TEST FLOWN WITHOUT DISCREPANCIES.

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