# SDR UPS97425071

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 12, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N673UP](https://openairdocs.org/aircraft/N673UP), registered now
- Make and model: Boeing 747123F
- Aircraft serial: 20325
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Connector
- Condition: Loose
- Location: Nr 1 Engine
- Stage of operation: TO
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS97425071

## Discrepancy

AFTER V1 ON TAKEOFF ROLL FIRE BELL WENT OFF BRIEFLY.  AT ALTITUDE NR 1 A LOOP FAILED THE FIRE TEST.  REFER TO LOG PAGE NR 996478.  NR 1 ENGINE NACELLE B LOOP SELECTED.  THE NR 1 A LOOP NACELLE INDICATOR CONTINUOUSLY JUMPED BETWEEN - 4 AND 8.  FOUND LOOSE CONNECTION ON OUTBD SIDE OF ENG RESECURED OPS CK GOOD PER M/M 26-00 THIS CLEARS DEFERAL M141523 PLACARD REMOVED .

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