# SDR UIEA9922

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N508MC
- Make and model: Boeing 747230B
- Aircraft serial: 21644
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: Malfuntioned
- Location: Nr 4
- Stage of operation: CR
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA9922

## Discrepancy

FLT CI328 - MAIN DECK SMOKE DETECTOR (NR 1) RED WARNING LIGHT ILLUMINATED AND BELL SOUNDED AND NR 4 SMOKE DETECTOR (A) LIGHT INTERMITTENTLY FLASHED A FEW TIMES DURING THE FIRST THREE HOURS OF FLIGHT.  THEY CAN ON AT THE SAME TIME AND WERE ONLY ON FOR A SHORT PERIOD OF TIME.  OPERATIONAL CHECK OF SYSTEM REVEALED NO ABNORMALITIES.  (M)

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