# SDR ASAA2016010514650

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 5, 2016
- Submitted: January 7, 2016
- Operation: Air carrier
- Aircraft: [N583AS](https://openairdocs.org/aircraft/N583AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35681
- Aircraft time: 32,361 hours, 9,562 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Fire Handle
- Condition: No Test
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016010514650

## Discrepancy

DURING OVERHEAT/FIRE TEST, NR 2 FIRE HANDLE DOES NOT ILLUMINATE AND ENGINE 2 OVERHEAT CAUTION LIGHT DOES NOT ILLUMINATE.  ACFT GROUNDED. PERFORMED ENGINE/APU FIRE DETECTION BITE FOUND FAULT NR 2 ENGINE LOOP B UPPER FAN DETECTOR FAULT IAW-800 FIM 26-10-801.  REMOVED ENGINE/APU FIRE DETECTION CONTROL MODULE M279.  INSPECTED RACK CONNECTORS, NO DEFECTS NOTED.  REINSTALLED M279 INOPERATIVE NORMAL IAW AMM 26-10-01. PERFORMED BITE, ALL FAULTS CLEARED.  ENGINE FIRE AND OVERHEAT DETECTOR SYS OPS TEST PASSED.

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