# SDR AALA202307115099

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 10, 2023
- Submitted: July 11, 2023
- Operation: Air carrier
- Aircraft: [N905NN](https://openairdocs.org/aircraft/N905NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31156
- Aircraft time: 31,457 hours, 13,407 cycles
- System (JASC): [2800 · Aircraft Fuel System](https://openairdocs.org/jasc/2800)
- Part: Fuel Filter
- Part number: UNKNOWN
- Condition: Contaminated
- Location: Zone 400 - Nac/P
- Stage of operation: DE
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202307115099

## Discrepancy

AIRCRAFT WAS GROUNDED: ENGINE #1 "FILTER BYPASS" LIGHT ILLUMINATED SHORTLY AFTER TAKEOFF AND WENT OUT IN DESCENT. REMOVED AND REPLACED LEFT HAND ENGINE FUEL FILTER.

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