# SDR SWAA101848

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 3, 2010
- Submitted: April 6, 2010
- Operation: Air carrier
- Aircraft: [N451WN](https://openairdocs.org/aircraft/N451WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32495
- Aircraft time: 22,812 hours, 13,210 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 849589
- Part serial: MX674789
- Condition: Failed
- Location: Nr 1 Engine
- Stage of operation: TO
- How discovered: O
- Nature of condition: K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA101848

## Discrepancy

AIR TURNBACK / DECLARED EMERGENCY  -  NR 3 MAIN TIRE BLEW OUT ON TAKEOFF AND LOST HYDRAULIC SYSTEM "A" AND LOST SYSTEM "B" ON LANDING, TOWED TO GATE.  REMOVED AND REPLACED "A" SYSTEM PUMP PER MM.

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