# SDR SWAA030904

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2003
- Submitted: April 30, 2003
- Operation: Air carrier
- Aircraft: N690SW
- Make and model: Boeing 737-3G7
- Registry model: [Boeing 737-3G7](https://openairdocs.org/model/boeing-737-3g7) (OpenAirDocs)
- Aircraft serial: 23783
- Aircraft time: 49,228 hours, 40,504 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Line
- Part number: AS118G0194CTR
- Condition: Leaking
- Location: Hyd System
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA030904

## Discrepancy

AIR TURNBACK, DECLARED EMERGENCY.  LOST B-SYSTEM HYDRAULIC FLUID CAUSING FAILURE OF B-SYSTEM.  FOUND, HYD LINE LEAKING FROM ACOUSTIC FILTER TO PRESS  B-MODULE.  REMOVED AND REPLACED HYD LINE FROM ACOUSTIC FILTER TO PRESS B-MODULE 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.