# SDR DALA2025100607233

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2025
- Submitted: October 6, 2025
- Operation: Air carrier
- Aircraft: [N411DX](https://openairdocs.org/aircraft/N411DX), registered now
- Make and model: Airbus A330-941
- Registry model: [Airbus A330-941](https://openairdocs.org/model/airbus-a330-941) (OpenAirDocs)
- Aircraft serial: 1991
- Aircraft time: 20,008 hours, 2,339 cycles
- Engine: Rroyce RB211TRENT76
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Oil System
- Condition: Overserviced
- Location: Lt Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: W, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025100607233

## Discrepancy

AIR TURN BACK TO LHR DUE TO FUMES IN COCKPIT AND CABIN.   FOUND LT ENGINE OVERSERVICED.  DRAINED AND SERVICED OIL TO CORRECT LEVEL. COMPLIED WITH PURGE RUN, REPLACED RECIRCULATION FILTERS AND RETURNED AIRCRAFT TO SERVICE. (7500614)

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