# SDR 2024FA0000734

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2024
- Submitted: September 24, 2024
- Operation: General aviation
- Aircraft: [N1925Y](https://openairdocs.org/aircraft/N1925Y), registered now
- Make and model: Mooney M20D
- Registry model: [Mooney M20D](https://openairdocs.org/model/mooney-m20d) (OpenAirDocs)
- Aircraft serial: 220
- Engine: Lyc O360A1D
- Propeller: Hartzl HCC2YK1
- System (JASC): [7820 · Engine Noise Suppressor](https://openairdocs.org/jasc/7820)
- Part: Muffler
- Part number: 6371
- Condition: Failed
- Location: Engine
- Part time: 4 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: D
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2024FA0000734

## Discrepancy

AFTER 3.5 HRS POST EXHAUST SYSTEM OVERHAUL, THE MUFFLER HAD A CATASTROPHIC FAILURE WHERE SECTION OF MUFFLER DEPARTED ASSEMBLY DUE TO INNER BAFFLING FAILED DUE TO MISSING WELD. 
AIRCRAFT WIRING WAS BURNED ON LT SIDE OF ENGINE (STARTER WIRE) CARBURETOR BOX WAS TORCHED AND BURNED, WITH EVIDENCE OF FIRE ON ENGINE AND ENGINE COMPARTMENT.

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