# SDR IKBR2021020500022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2021
- Submitted: February 5, 2021
- Operation: General aviation
- Filed by: [The Ohio State University Airport, repair station IKBR028F](https://openairdocs.org/faa-repair-station/IKBR028F/the-ohio-state-university-airport.md) (OpenAirDocs)
- Aircraft: [N20SU](https://openairdocs.org/aircraft/N20SU), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S11623
- Aircraft time: 3,111 hours
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Shroud
- Part number: 99541003
- Part serial: 1ZL530001
- Condition: Worn
- Location: Heat
- Part time: 3,111 hours
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IKBR2021020500022

## Discrepancy

SCREWS IN THE FRONT BAFFLES HAVE BEEN CHAFFING HOLES INTO THE FRONT OF THE MUFFLER HEAT SHROUD P/N 9954100-3, S/N 1ZL53-0001.  REMOVED MUFFLER SHROUD P/N 9954100-3 S/N 1ZL53-0001 INSTALLED REPAIRED SHROUD P/N 9954100-3 S/N 12194-0001 SHROUD REPAIRED USING AC 43.13-1B AS A GUIDE.

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