# SDR AALA202307282907

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 28, 2023
- Submitted: July 28, 2023
- Operation: Air carrier
- Aircraft: [N418AN](https://openairdocs.org/aircraft/N418AN), registered now
- Make and model: Airbus A321-253NX
- Registry model: [Airbus A321-253NX](https://openairdocs.org/model/airbus-a321-253nx) (OpenAirDocs)
- Aircraft serial: 9550
- Aircraft time: 2,661 hours, 9,782 cycles
- System (JASC): [2900 · Hydraulic Power System](https://openairdocs.org/jasc/2900)
- Part: Control Unit
- Part number: 612C3501503
- Part serial: WWD00938
- Condition: Leaking
- Location: Zone 400 - Nac/P
- Part time: 5,361 hours, 1,442 cycles
- Stage of operation: CL
- How discovered: V
- Nature of condition: J, K
- Precautionary procedure: A, O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202307282907

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO PHX: DURING CLIMB LOST ALL GREEN HYDRAULIC SYSTEM. FLIGHT CREW MANUALLY EXTENDED THE LANDING GEAR AND LANDED SAFELY AT PHX WITHOUT FURTHER INCIDENT. **ORIGINAL REPORT WAS AALA202306015493** MAINTENANCE FOUND THE #1 ENGINE GRREEN HYDRAULIC PUMP PRESSURE LINE CHAFFED / LEAKING AND REPLACED IT. ALSO FOUND THE #1 ENGINE THRUST REVERSER ISOLATION CONTROL UNIT LEAKING AND REPLACED IT. (AALA202307282907) A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.

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