# SDR CALA2017102703797

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 2017
- Submitted: October 27, 2017
- Operation: Air carrier
- Aircraft: [N891UA](https://openairdocs.org/aircraft/N891UA), registered now
- Make and model: Airbus A319-132
- Registry model: [Airbus A319-132](https://openairdocs.org/model/airbus-a319-132) (OpenAirDocs)
- Aircraft serial: 2901
- Aircraft time: 32,745 hours, 17,686 cycles
- System (JASC): [5100 · Standard Practices/Structures](https://openairdocs.org/jasc/5100)
- Part: Unknown
- Condition: Vibration
- Location: Unknown
- Stage of operation: CR
- How discovered: O
- Nature of condition: E, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2017102703797

## Discrepancy

AT FL280, HEARD VIBRATION NOISES LIKE PROPS OUT OF SYNC. THEN HEARD LOUD TONE NOISE FOR 4-5 SECONDS. THEN SMELLED AN ELECTRICAL BURNING ODOR FOR A FEW SECONDS. NO ECAMS OR ANY FAULTS. CREW REPORTED THE VIBRATION AND ODOR DISSIPATED.

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