# SDR AALA201911029010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 29, 2019
- Submitted: November 4, 2019
- Operation: Air carrier
- Aircraft: [N559UW](https://openairdocs.org/aircraft/N559UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5292
- Aircraft time: 24,142 hours, 9,636 cycles
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: O-Ring
- Condition: Defective
- Location: Apu
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201911029010

## Discrepancy

AIRCRAFT WAS GROUNDED: STRANGE ODOR (LIKE BURNING PLASTIC) FOUND THROUGHOUT INTERIOR OFAIRCRAFT UPON CREW ARRIVAL. REMOVED APU COOLING FAN, REPLACED O-RINGS, REFERENCE IPC 49-52-09-1, ITEMS 80 & 100. REINSTALLED APU COOLING FAN. OPS CHECK GOOD, NO LEAKS NOTED. ALL DONE IAW AMM 49-52-51-400-002A.

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