# SDR CALA2024120601420

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2024
- Submitted: December 6, 2024
- Operation: Air carrier
- Aircraft: [N2748U](https://openairdocs.org/aircraft/N2748U), registered now
- Make and model: Boeing 777-300ER
- Registry model: [Boeing 777-300ER](https://openairdocs.org/model/boeing-777-300er) (OpenAirDocs)
- Aircraft serial: 64994
- Aircraft time: 25,976 hours, 2,934 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 4755712
- Part serial: NA
- Condition: Faulty
- Location: Zone 200
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2024120601420

## Discrepancy

SMOKE REST UPR DOOR 1 EICAS MSG TWICE COMPLIED W/CHKLIST FOUND SMOKE DETECTOR BUNK 2 AT FAULT WITH RED LIGHT BLINKED. REPLACED BUNK 2 DETECTOR IAW AMM 26-14-31-000-801 AND -400-801 SMOKE DETECTION OPN TEST FOR OFCR PASSED.PARTS USED: 475571-2,QTY :1 TALKED WITH FLT CREW AND NO ACTUAL SMOKE CONDITION OCCRED AND THEY SAID BUNK 2 DETECTOR ALARMED TWICE WITH NO ACTUAL SMOKE CONDITION. ON ARRIVAL RED LIGHT BLINKED ON BUNK 2 DETECTOR.

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