# SDR SWAA990430

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N311SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 23333
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Line
- Part number: 171K1416CR0360
- Condition: Leaking
- Location: Mlg Ww
- Stage of operation: TX
- Nature of condition: K, B
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA990430

## Discrepancy

ON PUSH BACK GROUND CREW NOTICED SMOKE COMING FROM WHEEL WELL.  TIGHTENED B NUT ABOVE SHUTTLE VALVE, ABOVE FLAP ACTUATOR.  THEN SECOND PUSHBACK WITH B PUMPS ON AND BRAKE SET, THE SMOKE REAPPEARED.  REPLACED LINE BETWEEN BRAKE MEETING VALVE AND BRAKE SHUTTLE VALVE PER MM.

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