# SDR CALA2021101401864

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2021
- Submitted: October 14, 2021
- Operation: Air carrier
- Aircraft: [N13720](https://openairdocs.org/aircraft/N13720), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28939
- Aircraft time: 70,915 hours, 24,042 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Valve
- 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/CALA2021101401864

## Discrepancy

HYD SYS B FAILED AFTER TAKEOFF.  QTY ZERO. RUNNING LEAK AT FLOW VALVE REMOVED AND REPLACED TRAILING EDGE FLAP FLOW LIMITER REF AMM 27-51-67 LEAKED CHECK GOOD, HYD SYS B QTY IS AT 94

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