# SDR ASOA20131003242

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 3, 2013
- Submitted: October 3, 2013
- Operation: Air carrier
- Aircraft: [N14203](https://openairdocs.org/aircraft/N14203), registered now
- Make and model: Emb EMB-145XR
- Registry model: [EMB EMB-145XR](https://openairdocs.org/model/embraer-emb-145xr) (OpenAirDocs)
- Aircraft serial: 14500964
- Aircraft time: 20,237 hours, 11,789 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Heat Exchanger
- Condition: Unsecure
- Location: A/C Pack
- Stage of operation: CR
- How discovered: O
- Nature of condition: E, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASOA20131003242

## Discrepancy

DIVERTED FOR LOUD VIBRATION AND NOISE,  APPEARS TO BE FROM NR 1 A/C PACK.  A BURNING ODOR WAS EVIDENT.  VIBRATION AND NOISE GREW LOUDER WITH INCREASED AIRSPEED.  MX FOUND BOLT ON UPPER HEAT EXCHANGER MOUNT MISSING WASHER AND NUT INSTALLED IAW AMM 20-10-01.  NO VIBRATION NOTED OR BURNING ODOR NOTED.  ACFT APPROVED FOR RETURN TO SERVICE.

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