# SDR AALA2019080139019

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2019
- Submitted: August 1, 2019
- Operation: Air carrier
- Aircraft: [N829NN](https://openairdocs.org/aircraft/N829NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33210
- Aircraft time: 30,070 hours, 11,922 cycles
- System (JASC): [2822 · Fuel Boost Pump](https://openairdocs.org/jasc/2822)
- Part: Pump
- Part number: 609891005
- Part serial: 011009687
- Condition: Defective
- Location: Fuel Boost
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2019080139019

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT REPORTS FUEL IN NR 2 MAIN SEEMS TO BE BURNING DURING CENTER TANK OPERATION. BOTH MAIN TANKS FULL AT DEPARTURE, 8.2. WHEN CENTER TANK EMPTY NR 1 MAIN 8.1 AND NR 2 MAIN 7.3. MAINTENANCE REPORTS PREVIOUS PUMP INSTALLED RECENTLY BAD FROM STOCK. REMOVED AND REPLACED R/H CTR FUEL BOOST PUMP IAW AMM 28-22-41. OPS AND LEAK CHECK GOOD. NO UNWANTED FUEL TRANSFER NOTED.

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