# SDR ASAA2018041424284

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2018
- Submitted: May 23, 2018
- Operation: Air carrier
- Aircraft: [N570AS](https://openairdocs.org/aircraft/N570AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35185
- Aircraft time: 42,524 hours, 12,620 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7330 · Engine Fuel Indicating System](https://openairdocs.org/jasc/7330)
- Part: Fault Code
- Condition: False Activation
- Location: Nr 2 Engine
- Stage of operation: IN
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018041424284

## Discrepancy

WHILE ACCOMPLISHING T/C 78273000, FOUND LONG TIME FAULT. CODE/MSG NUMBER: 73-21072 - THE FUEL FILTER SIGNALS DISAGREE ON NR 2 ENGINE.  ACFT GROUNDED.  ACCOMPLISHED FIM 73-05 TASK 801 FOR FAULT 73-21072 AND PERFORMED EEC TEST FOR THE NR 2 ENGINE IAW FIM 73-00 TASK 801. NO FAULTS NOTED ON ANY LEG, INPUT MONITORING OF THE BYPASS FILTER SWITCHES SHOWS CORRECT STATES, AND THE EEC TEST PASSED. AIRCRAFT SHOWS NO RECENT SIMILAR HISTORY.

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