# SDR YENA201612301120

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 2016
- Submitted: January 4, 2017
- Operation: Air carrier
- Aircraft: [N517JB](https://openairdocs.org/aircraft/N517JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1327
- Aircraft time: 64,145 hours, 23,621 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Bypass Valve
- Part number: 114087005
- Part serial: CWDDDH22700
- Condition: Failed
- Location: Mlg
- Part time: 64,152 hours, 23,621 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA201612301120

## Discrepancy

FLT 778, LAS-BOS, AIR RETURN BACK TO LAS. FLIGHT CREW RECEIVED THE FOLLOWING MESSAGE ON ECAM, HYD G ENG 1 PUMP LO PR AND HYD G SYS LO PR. CREW ELECTED TO PERFORM AIR TURNBACK. R & R MLG BYPASS VALVE IAW AMM 32-31-13. PERFORMED OPS CHECK AND LEAK CHECK. OPS CHECK AND LEAK CHECK PASSED. SERVICED GREEN HYDRAULICS SYSTEM IAW 12-12-29.

---
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.