# SDR KC8A20260120001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2026
- Submitted: January 20, 2026
- Operation: Air carrier
- Aircraft: [N273LP](https://openairdocs.org/aircraft/N273LP), registered now
- Make and model: Lear 45LEAR
- Aircraft serial: 185
- Aircraft time: 8,474 hours, 7,266 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Fire Loop
- Part number: 74403915
- Condition: False Activation
- Location: Zone 400
- Stage of operation: DE
- How discovered: O
- Nature of condition: N
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KC8A20260120001

## Discrepancy

DURING DECENT INTO DESTINATION AIRPORT, KYIP, THE RIGHT ENGINE WHITE CAS MESSAGE 'R ENG FIRE FAIL' FOLLOWED BY RED CAS MESSAGE 'R ENGFIRE' ON EICAS. CONTINUED DECENT, OBSERVED NO OTHER ENGINE ISSUES. RETARDED POWER LEVER TO FLIGHT IDLE. EICAS MESSAGES NO LONGER DISPLAYED. CONTINUED APPROACH AND LANDED WITHOUT INCIDENT. UPON INSPECTION OF ENGINE, NO SIGNS OF ENGINE FIRE OR HEAT DAMAGE SEEN. INVESTIGATED FIRE DETECTION SYSTEM AND FOUND THE LOWER FIRE LOOP, GEARBOX AREA,  SHORTING AGAINST THE FIRE LOOP SUPPORT BRACKET. VERIFIED CAUSE, REPOSITIONED LOOP, INSULATED LOOP LEAD. ALL WORK I.A.W. THE LEARJET 45 MM-104 26-11-00 AND WIRING MANUAL WM-104 20-20-01 AND 20-30-20.

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