# SDR CALA2021120602268

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2021
- Submitted: December 6, 2021
- Operation: Air carrier
- Aircraft: [N24224](https://openairdocs.org/aircraft/N24224), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28933
- Aircraft time: 70,953 hours, 25,341 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Connector
- Part number: NA
- Condition: Broken
- Location: Eng #1
- Stage of operation: UK
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2021120602268

## Discrepancy

ENG FIRE WARN NO1 ENG PAGE LOCKED PAGE UNLOCKED ACCOMPLISHED ENGINE-APU FIRE DETECTION CONTROL MODULE BITE RETERMINATED. VERIFIED NORMAL OPERATION WITH ENGINE IDLE RUN. PROCEDURE REF FIM 26-10-801. FOUND 1 LOOP B LOW DET RESIS. FAULT ACCOMPLISHED ENGINE LOW DETECTOR RESISTANCE FAULT ISOLATION. FOUND B LOOP CONNECTION BROKEN AT 2:00. CONNECTION. ADD EMP:103270

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