# SDR CALA2023021000379

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 10, 2023
- Submitted: February 10, 2023
- Operation: Air carrier
- Aircraft: [N17963](https://openairdocs.org/aircraft/N17963), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 37812
- Aircraft time: 32,843 hours, 3,116 cycles
- System (JASC): [7900 · Engine Oil System (Airframe Furnished)](https://openairdocs.org/jasc/7900)
- Part: Pump
- Part number: NA
- Condition: Inoperative
- Location: Eng #1
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023021000379

## Discrepancy

ENG OIL QTY DECREASING AT A RATE OF 1 QT / 20 MINUTES TUBE. REMOVED AND REPLACED MAIN FUEL PUMP AND VSFG CARBON SEAL. MAIN FUEL PUMP AND VFSG LEAK AND OPS CHECKED NORMAL. PER LOG PAGE PERFORMED TEST 6 AND TEST 4. NO VISABLE LEAKS IN DRAINS AFTER RUNS.

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