# SDR N71CK81407

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 2007
- Submitted: August 14, 2007
- Operation: Air carrier
- Aircraft: [N71CK](https://openairdocs.org/aircraft/N71CK), registered now
- Make and model: Lear 36A
- Registry model: [Lear 36A](https://openairdocs.org/model/gates-lear-jet-36a) (OpenAirDocs)
- Aircraft serial: 035
- Aircraft time: 17,073 hours, 9,623 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Part number: 896416
- Condition: Out Of Position
- Location: Rt Engine
- Stage of operation: UK
- 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/N71CK81407

## Discrepancy

THIS IS AN UPDATE TO THE PREVIOUS SDR DATED 8/13/2007.  RT ENGINE FIRE WARNING LIGHT ILLUMINATED DURING FLIGHT.  INVESTIGATION FOUND THE AFT FIRE SENSE LOOP IN THE TAIL CONE OF THE ENGINE WAS CHAFING ON THE TAIL PIPE AT A CERTAIN POWER SETTING.  DUPLICATED DISCREPANCY.  CORRECTED POSITIONING OF THE FIRE LOOP AND TESTED SYSTEM.  ALL WORK PERFORMED IAW THE LEARJET 35 / 36 / 35A / 36A MAINTENANCE MANUAL.

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