# SDR GAIA99146

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N279US](https://openairdocs.org/aircraft/N279US), registered now
- Make and model: Boeing 727251
- Aircraft serial: 21158
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 302842
- Condition: Inoperative
- Location: Cargo Compt
- Stage of operation: IN
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GAIA99146

## Discrepancy

DURING ROUTINE MAINTENANCE AT TOL IT WAS DISCOVERED, THAT THE NR 2, NR 4, NR 5, AND NR 6 SMOKE DETECTORS WOULD NOT TEST.  REMOVED AND REPLACED THE NR 2, NR 4, NR 5 AND NR 6 SMOKE DETECTORS.  OPERATIONALLY CHECKS NORMAL.  THE AIRCRAFT WAS RETURNED TO SERVICE.  (M)

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