# SDR SWAA2022080137105

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 2022
- Submitted: August 1, 2022
- Operation: Air carrier
- Aircraft: [N765SW](https://openairdocs.org/aircraft/N765SW), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29805
- Aircraft time: 75,310 hours, 44,297 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Leaking
- Location: #2 Engine
- Stage of operation: CR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2022080137105

## Discrepancy

DURING FLIGHT AT 29K FEET WE LOST HYDRAULIC SYS B FLUID WENT TO ZERO AND TOTAL LOSS OF PRESSURE / [01] REF TTG8Q00DVGLL ALT BRAKE SELECTOR VALVE LEAKING. MT 729-PPRD-01-01 HYDRO SYSTEM FLUSH / FILTER R/R B SYSTEM. NO METAL OR DEBRIS NOTED. TTG8Q00DVGR3 ' B ' EMDP R/R; TTG8Q00VGR5 #2 EDP R/R; SYSTEM RESTORED NO LEAKS NOTED.

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