# SDR DALA2025072305533

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2025
- Submitted: July 23, 2025
- 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: 12,295 hours, 2,978 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil System
- Condition: Leaking
- Location: Apu
- Stage of operation: IN
- How discovered: V
- Nature of condition: K, B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025072305533

## Discrepancy

AIRCRAFT 5005, STRONG DIRTY SOCK ODOR ON GROUND WITH APU RUNNING. ODOR THROUGH ENTIRE AIRCRAFT.   FOUND OIL CONTAMINATION IN APU INLET SURROUNDING AREAS. ECS DECONTAMINATED COMPLETED PER WC # 2100-2005, AMDS WC# 0550-9001-A320FAM ALSO COMPLETED. (LP 6995532, 1094648)

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