# SDR UALA2013041602601

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2013
- Submitted: June 3, 2013
- Operation: Air carrier
- Aircraft: [N458UA](https://openairdocs.org/aircraft/N458UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1163
- Aircraft time: 43,542 hours, 18,365 cycles
- Engine: Iae V2527A5
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2013041602601

## Discrepancy

PACKS PRODUCE A STRONG ACIDIC SMELL IN THE DESCENT.  OCCURS WHEN THRUST IS REDUCED.  REPEAT ITEM PERFORMED HIGH POWER ENGINE RUN WITH BOTH ENGINES, PACKS ON, NO SMELL NOTED.  OK TO CONTINUE.

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