# SDR ASAA0946555

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 2009
- Submitted: September 8, 2009
- Operation: Air carrier
- Aircraft: N764AS
- Make and model: Boeing 737-4Q8
- Registry model: [Boeing 737-4Q8](https://openairdocs.org/model/boeing-737-4q8) (OpenAirDocs)
- Aircraft serial: 25101
- Aircraft time: 55,076 hours, 32,732 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic Line
- Part number: AS116080290
- Condition: Damaged
- Location: Mlg Ww
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0946555

## Discrepancy

AT FL 370 ENG 2 SYSTEM B LOW PRESSURE LIGHT ILLUMINATED.  HYD B SYSTEM SHOWED 40 PERCENT THEN DROPPED TO 1 PERCENT.  ELEC B LIGHT ILLUMINATED ALONG WITH FEEL DIFFERENTIAL PRESSURE LOSS OF SYS B.  REPLACED HYDRAULIC LINE AND HOSE.  OP AND LEAK CHECK GOOD.

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