# SDR UPS03241662

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2003
- Submitted: December 17, 2003
- Operation: Air carrier
- Aircraft: [N949UP](https://openairdocs.org/aircraft/N949UP), registered now
- Make and model: Boeing 727-25C
- Registry model: [Boeing 727-25C](https://openairdocs.org/model/boeing-727-25c) (OpenAirDocs)
- Aircraft serial: 19717
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: Inoperative
- Location: Cargo Bay
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS03241662

## Discrepancy

LOWER CARGO COMPARTMENT SMOKE DETECTION MX LIGHT ON. DISPLAYED ITEM MX MESSAGE SCU (B).  PERFORMED MX ISOLATION METHOD FOR SCU (B) MESSAGE IAW 26-19-00.  NO DEFECT NOTED OR REPEAT MESSAGE.

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