# SDR DALA2020012973598

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 16, 2019
- Submitted: January 29, 2020
- Operation: Air carrier
- Aircraft: N708DN
- Make and model: Boeing 777232LR
- Aircraft serial: 39254
- Aircraft time: 53,182 hours, 4,743 cycles
- Engine: Ge GE90110B1
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Tube
- Condition: Damaged
- Location: Bearing Supply
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2020012973598

## Discrepancy

DUE TO OIL QUANTITY FELL TO L01 ON LEFT ENGINE.  PRESSURE AND TEMP NORMAL.  PRECAUTIONARY DIVERSION.    FOUND THE NR 4 AND 5 BEARING SUPPLY OIL TUBE DAMAGE.  REMOVED AND REPLACED THE OIL TUBE IAW AMM 70-00-01-400-804-H01. LEAK CHECKED GOOD.

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