# SDR ASAA2012061492349

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 1, 2012
- Submitted: June 19, 2012
- Operation: Air carrier
- Aircraft: [N506AS](https://openairdocs.org/aircraft/N506AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35690
- Aircraft time: 15,273 hours, 4,911 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Warning Light
- Condition: False Activation
- Location: Fire Detector
- Stage of operation: DE
- 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/ASAA2012061492349

## Discrepancy

APU OVERHEAT DETECTOR INOPERATIVE LIGHT ON WITH MASTER CAUTION.  CAME ON AT 500 AND WENT OUT AT TOUCH DOWN.  APU WAS NOT RUNNING.  ACFT GROUNDED.  PERFORMED FIM 26-10-00-810-801, ENF/APU FIRE DETECTIONS CONTROLLER MOD BITE PROCEDURE.  PASSED SEVERAL TIMES.  VISUALLY INSPECTED 3 EA LOOPS FOR SECURITY & PROPER ROUTING.  LIGHT REMAINED OFF DURING INSPECTION.    GROUND VERIFICATION SUCCESSFUL,

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