# SDR AALA2018080119029

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2018
- Submitted: August 1, 2018
- Operation: Air carrier
- Aircraft: [N578UW](https://openairdocs.org/aircraft/N578UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6035
- Aircraft time: 15,326 hours, 5,995 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Line
- Condition: Damaged
- Location: Hyd System
- Stage of operation: DE
- 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/AALA2018080119029

## Discrepancy

DURING DESCENT, RECEIVED A HYDRAULIC YELLOW LOW QUANTITY MESSAGE,  FOLLOWED BY A HYDRAULIC YELLOW LOW PRESSURE ECAM MESSAGE.  AN EMERGENCY WAS DECLARED, AND LANDED WITHOUT FURTHER INCIDENT.  AIRCRAFT WAS GROUNDED.   MAINTENANCE REPLACED MIDDLE PRESSURE LINE IN THE NR 2 ENGINE NACELLE AND PERFORMED A SATISFACTORY OPS CHECK IAW AMM 29-13-49.

---
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.