# SDR UPS02437916

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 22, 2002
- Submitted: March 27, 2002
- Operation: Air carrier
- Aircraft: N522UP
- Make and model: Boeing 747-200
- Registry model: [Boeing 747-200](https://openairdocs.org/model/boeing-747-200) (OpenAirDocs)
- Aircraft serial: 21936
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Circuit Card
- Condition: Loose
- Location: Fire Detection
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS02437916

## Discrepancy

INSPECTION TYPE:N/A DURING CLIMB NR 3 ENG FIRE DETECT FAULT LIGHT ILLUMINATED CHANNEL A NEEDLE WAVERED IN RED/ORANGE BAND.  STABLE IN GREEN BAND ONCE POWER REDUCED.  SELECTED CHANNEL B ONLY.  NR 3 ENG FIRE DETECTOR -A- INOP.  REF M23 4208.   RESEATED THE A-3/A-7 WARNING AND CONTROL CARDS IAW MM 26-10-0 0, CHECKS GOOD.

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