# SDR ASAA2017122422999

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 24, 2017
- Submitted: December 26, 2017
- Operation: Air carrier
- Aircraft: [N461AS](https://openairdocs.org/aircraft/N461AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36363
- Aircraft time: 14,924 hours, 4,912 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7330 · Engine Fuel Indicating System](https://openairdocs.org/jasc/7330)
- Part: O-Ring
- Condition: Leaking
- Location: Fuel Filter
- Stage of operation: TX
- How discovered: V
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017122422999

## Discrepancy

FILTER BYPASS CAUTION ILLUMINATED ON ENGINE NR 1 AFTER ENGINE START UP.  ACFT GROUNDED.  PERFORMED EEC BITE CHECK FOR NR 1 ENGINE RECENT FAULTS.  FOUND FUEL FILTER SIGNALS DISAGREE FAULT MESSAGE PRESENT.  CHECKED FUEL FILTER FOR CONTAMINATION IAW AMM 73-11-02.  NO CONTAMINATION NOTED.  ALL LEAKS CHECKED OK.  REMOVED AND REPLACED THE NR 1 ENGINE FUEL FILTER AND O-RINGS WITH NEW.  ENGINE IDLE, LEAK CHECKS COMPLETE. NO DEFECTS NOTED IAW AMM 73-11-02.

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