# SDR CALA2020053101003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 30, 2020
- Submitted: May 31, 2020
- Operation: Air carrier
- Aircraft: [N426UA](https://openairdocs.org/aircraft/N426UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 510
- Aircraft time: 83,074 hours, 32,409 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Unknown
- Condition: Malfunctioned
- Location: Hydraulic Sys
- 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/CALA2020053101003

## Discrepancy

ECAM CAUTION MESSAGE.  Y ENG PUMP LO PR MESSAGE INOP.  HYD TOMC UPDATE FLAGGING AS SDR ITEM CREW STATES THE Y-ENG PUMP FAILED AND PTU TOOK OVER, YELLOW SYS WAS NORMAL WITH PTU.  REF TSM 29-13-00-810-804-A FOR TROUBLESHOOTING IAW TSM 29-13-00-810-804-A.  ACCOMPLISHED OPERATIONAL TEST OF YELLOW HYDRAULIC SYSTEM IAW AMM 29-13-00-710-002-A.  YELLOW ENGINE DRIVEN PUMP OPERATION CHECKED OK.  NO FAULTS NOTED. REPLACED ENG 2 PUMP P/BSW AS A PRECAUTIONARY MEASURE AND PERFORMED TEST OF YELLOW HYDRAULIC SYSTEM AGAIN.  OPERATIONS CHECK OK.

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