# SDR ASAA2018051424620

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2018
- Submitted: May 16, 2018
- Operation: Air carrier
- Aircraft: [N506AS](https://openairdocs.org/aircraft/N506AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35690
- Aircraft time: 37,786 hours, 11,567 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Warning Message
- Part number: UNKNOWN
- Condition: False Activation
- Location: Nr 2 B Fire Loop
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018051424620

## Discrepancy

NR 2 ENGINE B LOOP INOPERATIVE.  ACFT GROUNDED.  PERFORMED A NR 2 ENGINE FIRE LOOP DETAILED INSPECTION.  TERMINALS AND CONNECTORS ALL SERVICEABLE.  RAN THE NR 2 ENGINE FOR 15 MINUTES,  COULD NOT DUPLICATE DEFECT. PERFORMED ENGINE AND APU FIRE DETECTION CONTROL MODULE BITE BEFORE, DURING AND AFTER ENGINE RUN IAW FIM 26-10 TASK 801. NO FAULTS. NO HISTORY 30 DAYS, COULD NOT DUPLICATE FAULT.

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