# SDR SWAA090885

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 6, 2009
- Submitted: February 6, 2009
- Operation: Air carrier
- Aircraft: N376SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 26584
- Aircraft time: 50,743 hours, 42,923 cycles
- System (JASC): [2710 · Aileron Control System](https://openairdocs.org/jasc/2710)
- Part: Pcu
- Part number: 654476121
- Part serial: 1143CA
- Condition: Leaking
- Location: Aileron System
- Stage of operation: UK
- 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/SWAA090885

## Discrepancy

LOSS OF A-SYSTEM HYDRAULIC QUANTITY FOLLOWED BY LOSS OF A-SYSTEM HYDRAULICS (ENGINE AND ELECTRIC PUMPS TURNED OFF AT FIRST LOW PRESS LIGHT INDICATION 1/4 TANK QUANTITY).  FOUND A-SYSTEM AILERON PCU LEAKING.  REMOVED AND REPLACED PCU PER MM.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.