# SDR USAA2012080100020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2012
- Submitted: August 1, 2012
- Operation: Air carrier
- Aircraft: N637AW
- Make and model: Airbus A320-231
- Registry model: [Airbus A320-231](https://openairdocs.org/model/airbus-industrie-a320-231) (OpenAirDocs)
- Aircraft serial: 99
- Aircraft time: 70,950 hours, 31,586 cycles
- System (JASC): [3830 · Waste Disposal System](https://openairdocs.org/jasc/3830)
- Part: Generator
- Part number: 14330350
- Part serial: 06014439
- Condition: Faulty
- Location: Waste System
- Part time: 19,110 hours, 8,600 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2012080100020

## Discrepancy

AFTER PUSHBACK AND STARTING NR 1 ENGINE, THE FLIGHT ATTENDANT REPORTED A BURNING SMELL, (ELECTRICAL OR RUBBER).  SHORTLY THEREAFTER, PILOT AND FIRST OFFICER COULD ALSO SMELL IT.  MAINTENANCE REMOVED AND REPLACED THE VACUUM GENERATOR IAW AIRBUS MAINTENANCE MANUAL 38-31-64.

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