# SDR AALA202509039070

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 31, 2025
- Submitted: September 3, 2025
- Operation: Air carrier
- Aircraft: [N127UW](https://openairdocs.org/aircraft/N127UW), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 4202
- Aircraft time: 41,836 hours, 23,353 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil System
- Condition: Leaking
- Location: Apu
- Component: Apu, Hnywl
- Component part number: 38007081
- Stage of operation: CR
- 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/AALA202509039070

## Discrepancy

AIRCRAFT WAS GROUNDED: UPON SOF TROUBLESHOOTING PER J/C 26L000021001. FOUND APU TO BE THE CAUSE OF THE ODOR. LEAKING FROM DRAIN MAST. MAINTENANCE REPLACED APU IAW J/C 26L31049003.

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