# SDR DALA2020022101334

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 2020
- Submitted: February 22, 2020
- Operation: Air carrier
- Aircraft: [N825NW](https://openairdocs.org/aircraft/N825NW), registered now
- Make and model: Airbus A330-302
- Registry model: [Airbus A330-302](https://openairdocs.org/model/airbus-a330-302) (OpenAirDocs)
- Aircraft serial: 1679
- Aircraft time: 20,237 hours, 2,512 cycles
- Engine: Ge CF680E1A4
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Bearing
- Condition: Leaking
- Location: Rt Engine Oil
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2020022101334

## Discrepancy

A/C 3325 - DIV - TO BSB (BRASILIA) DUE TO RT ENGINE OIL QTY DROP. IT IS SUSPECTED THAT THE METAL FOUND DURING D SUMP CHIP DETECTOR INSPECTION IS 17-4PH WHICH IS CONSISTENT WITH THE PREVIOUS INSTANCES. CORRECTIVE ACTION: REMOVED THE NBR 6 BEARING NUT ASSEMBLY, INSPECTED ALL SURFACES AND INNER RACE FOR DISCOLORATION. COAT THE THREADS AND THE FACE OF THE NO. 6 BEARING NUT ASSEMBLY WITH LUBRICANT (C02-058). TORQUE THE NO. 6 BEARING NUT ASSEMBLY TO 2000-2300 LB FT, LOOSENED AND CALCULATED MOVEMENT OF THE NBR 6 BEARING INNER RACE AND TORQUED THE NO. 6 BEARING NUT ASSEMBLY 1400 LB FT. REPLACED THE INTEGRAL SEAL RING. RE-ASSEMBLED PER ER/A 585427-14. RAN THE ENGINE AND CHECKED FOR OIL LEAKAGE AND VIBRATION. LP 7208346.

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