# SDR AALA202104199044

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2021
- Submitted: April 20, 2021
- Operation: Air carrier
- Aircraft: [N868NN](https://openairdocs.org/aircraft/N868NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 40763
- Aircraft time: 29,921 hours, 12,280 cycles
- System (JASC): [2821 · Aircraft Fuel Filter/Strainer](https://openairdocs.org/jasc/2821)
- Part: Fuel Filter
- Condition: Clogged
- Stage of operation: NR
- 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/AALA202104199044

## Discrepancy

AIRCRAFT WAS GROUNDED: FUEL FILTER BYPASS LIGHT ILLUMINATED IN FLIGHT FOR APPROXIMATELY FOUR MINUTES, THEN EXTINGUISHED; FLIGHT DECLARED EMERGENCY AND RETURNED TO FIELD. REPLACED FUEL FILTER IAW AMM 73-11-02 AND REPLACED FUEL FILTER DIFFERENTIAL PRESSURE SWITCH (AALA202104199043) IAW AMM 73-34-01 ON # 1 ENG, LEAK AND OPS CHECK GOOD.

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