# SDR S03226019

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2003
- Submitted: May 8, 2003
- Operation: Air carrier
- Make and model: Boeing 747*
- Aircraft serial: 24308
- Engine: Pwa JT9D7R4G2
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Circuit Card
- Part number: 350059
- Condition: Malfunctioned
- Location: Ww Fire Detect
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/S03226019

## Discrepancy

WHEEL WELL FIRE WARNING WAS TRIGGERED AFTER LANDING GEAR SELECTED UP, CREW FOLLOWED QRH PROCEDURE TO DOWN MLG, WARNING LIGHT WENT OUT FOR 1 SEC THEN CAME ON AGAIN. GROUND CHECK FOUND NO OIL/AIR LEAKAGE.  ALL WHEELS AND BRAKES WERE CHECKED NORMAL. A/C BACKED INTO SERVICE TO TPE.  SENSORS /WIRING CONDITION CHECKED STILL NORMAL.  THE W/W FIRE DETECTION CONTROL CARD WERE REPLACED.  NO FURTHER WARNING TRIGGERED EVER SINCE.

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