# SDR DALA2024040103932

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2024
- Submitted: April 1, 2024
- Operation: Air carrier
- Aircraft: [N505DZ](https://openairdocs.org/aircraft/N505DZ), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 10935
- Aircraft time: 6,841 hours, 1,621 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Condition: Contaminated
- Location: Aft
- Stage of operation: TX
- How discovered: 9
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2024040103932

## Discrepancy

AIRCRAFT 5005, RETURNED TO GATE FOR ODD SMELL FROM PAX. AIRFLOW SMELL GOT WORSE ONCE ENGINE START AND APU TURNED OFF. FLIGHT ATTENDANTS COMPLAINED OFF A HEADACHE. CORRECTIVE ACTION: REPLACED APU, CLEANED APU COMPARTMENT AND REPLACED RECIRCULATION FILTERS. (LP 5254368)

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