# SDR CALA2025101009898

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2025
- Submitted: October 10, 2025
- Operation: Air carrier
- Aircraft: [N73283](https://openairdocs.org/aircraft/N73283), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31606
- Aircraft time: 66,962 hours, 24,977 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Control Module
- Part number: 90195002
- Part serial: 243
- Condition: Faulted
- Location: Zone 200
- Part time: 78,474 hours, 29,012 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025101009898

## Discrepancy

APU FAULT/APU DET INOP FOUND DETECTION MODULE FAULTED, REPLACED ENGINE AND APU FIRE CONTROL MODULE REF AMM 26-10-01, GRD OPS TEST REF AMM TASK 26-11-00-710-801 AND 26-15-00-710-801 NO FAULTS NOTED

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