# SDR O9IA20160421002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2016
- Submitted: April 21, 2016
- Operation: Air carrier
- Aircraft: [N543LM](https://openairdocs.org/aircraft/N543LM), registered now
- Make and model: Lear 35A
- Registry model: [Lear 35A](https://openairdocs.org/model/gates-learjet-35a) (OpenAirDocs)
- Aircraft serial: 350426
- Aircraft time: 13,384 hours, 11,366 cycles
- Engine time: 10,668 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- 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/O9IA20160421002

## Discrepancy

ON APPROACH, THE NR 1 FIRE LIGHT ILLUMINATED AGAIN.  WHEN THROTTLE WAS PULLED TO IDLE, THE LIGHT EXTINGUISHED.  ENG COMPARTMENT WAS INSPECTED FOR SIGNS OF FIRE & NONE WAS NOTED.  THIS IS AN ONGOING INTERMITTENT ISSUE.  WIRING, BLEED LINES, FIRE LOOPS HAVE BEEN CHECKED WITH NO FAULTS NOTED.  A GND RUN DUPLICATED THE ISSUE FOR ABOUT TWO SECONDS DURING START.  LIGHT THEN WENT OUT & WE WERE UNABLE TO DUPLICATE AGAIN.  TROUBLESHOOTING CONTINUES.  A FOLLOW UP REPORT WILL BE FILED USING THIS SAME CONTROL NUMBER.

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