# SDR OG5S2015FA0000237

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 27, 2015
- Submitted: May 27, 2015
- Operation: General aviation
- Aircraft: [N511ND](https://openairdocs.org/aircraft/N511ND), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S10762
- Engine: Lyc IO360L2A
- Propeller: Mcauly 1A170E
- System (JASC): [7820 · Engine Noise Suppressor](https://openairdocs.org/jasc/7820)
- Part: Muffler
- Part number: A175400125
- Part serial: 38828
- Condition: Cracked
- Location: Engine
- Part time: 137 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/OG5S2015FA0000237

## Discrepancy

SPOT WELDS IN MUFFLER CAN LET LOOSE, LETTING CARBON MONOXIDE INTO CABIN HEAT DUCT.

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