# SDR AALA202201315359

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 24, 2022
- Submitted: January 31, 2022
- Operation: Air carrier
- Aircraft: [N583UW](https://openairdocs.org/aircraft/N583UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6181
- Aircraft time: 24,485 hours, 9,643 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Cooling Fan
- Part number: 361614011
- Part serial: P2756CC
- Condition: Leaking
- Location: Apu Oil Sys
- Part time: 4,077 hours, 1,712 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202201315359

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT ATTENDANTS REPORT RUBBER OR PLASTIC LIKE BURNING ODOR COMING FROM NEAR DOOR 2L . NO VISIBLE SMOKE. DURING DECENT ODOR SEEMED TO COME AND GO INTERMITTENTLY. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU.  REPLACED APU OIL COOLING FAN AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK PER AMM 49-52-51.

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