# SDR SWAA2012022401669

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 12, 2012
- Submitted: February 24, 2012
- Operation: Air carrier
- Aircraft: [N399WN](https://openairdocs.org/aircraft/N399WN), registered now
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 27693
- Aircraft time: 55,749 hours, 45,863 cycles
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Pcu
- Part number: 654476122
- Part serial: 12004A
- Condition: Leaking
- Location: Lt Mlg Ww
- Stage of operation: UK
- How discovered: O
- Nature of condition: K
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2012022401669

## Discrepancy

AIR TURNBACK -  A-SYSTEM QUANTITY DROPPED TO 1/4 INFLIGHT.   FOUND HYDRAULIC LEAK IN NR 1 WHEEL WELL.  REMOVED AND REPLACED "A" SYSTEM AILERON PCU IAW MM.

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