# SDR DALA2025121209103

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2025
- Submitted: December 12, 2025
- Operation: Air carrier
- Aircraft: [N120DU](https://openairdocs.org/aircraft/N120DU), registered now
- Make and model: Airbus BD-500-1A10
- Registry model: [Airbus BD-500-1A10](https://openairdocs.org/model/airbus-canada-ltd-ptnrsp-bd-500-1a10) (OpenAirDocs)
- Aircraft serial: 50039
- Aircraft time: 16,010 hours, 7,439 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Oil System
- Condition: Overserviced
- Location: Rt Engine
- Stage of operation: DE
- How discovered: O
- Nature of condition: W, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025121209103

## Discrepancy

A/C 8120 -FUMES- CREW REPORTED DIRTY SOCK SMELL AND DONNED O2 MASKS. EMERGENCY WAS DECLARED. CORRECTIVE ACTION: MTC FOUND RT ENGINE OVERSERVICED. (LP# 7932476)

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