# SDR AALA202512042664

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2025
- Submitted: December 4, 2025
- Operation: Air carrier
- Aircraft: [N922US](https://openairdocs.org/aircraft/N922US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6537
- Aircraft time: 34,071 hours, 13,974 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 974540
- Part serial: G1431277
- Condition: Leaking
- Location: Zone 100
- Part time: 34,071 hours, 13,974 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202512042664

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED INBOUND INTO PHX DUE TO THE FLIGHT CREW REPORTING THAT IN ROUTE AN ECAM MESSAGES FOR BLUE HYDRAULIC SYSTEM LOW PRESSURE AND LOW LEVEL DISPLAYED. THE AIRCRAFT LANDED SAFELY AT PHX WITHOUT FURTHER INCIDENT. MAINTEANCE FOUND THE BLUE HYDRAULIC SYSTEM ELECTRIC PUMP LEAKING FLUID AND INOPERATIVE. MAINTENANCE REPLACED THE PUMP AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK PER AMM 29-12-51.

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