# SDR 96ZZZX4788

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N8882V](https://openairdocs.org/aircraft/N8882V), registered now
- Make and model: Cessna 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (OpenAirDocs)
- Aircraft serial: 17264241
- System (JASC): [7810 · Engine Collector/Tailpipe/Nozzle](https://openairdocs.org/jasc/7810)
- Part: Muffler
- Part number: 175400115
- Condition: Deformed
- Location: Engine Exhaust
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX4788

## Discrepancy

DURING ANNUAL INSPECTION, FOUND END OF MUFFLER CRACKED AND BODY OF MUFFLER BULGED UNDER HEAT SHIELD.  THE DEFORMATION HAD BEEN PRESENT FOR SOME TIME.  PROBLEM MAY HAVE OCCURRED DUE TO EXCESSIVE LEANING OF MIXTURE.  (NOTE:  EGT INDICATOR WAS INOP ON INSPECTION RUN-UP.)  THE HEAT SHIELD MUST BE REMOVED FOR INSPECTION AT EVERY ANNUAL.  FAILURE WOULD CAUSE CARBON MONOXIDE POISONING AND HEAT DAMAGE TO ENGINE.

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