# SDR AALA201901142004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2019
- Submitted: January 14, 2019
- Operation: Air carrier
- Aircraft: [N720AN](https://openairdocs.org/aircraft/N720AN), registered now
- Make and model: Boeing 777323ER
- Aircraft serial: 33522
- Aircraft time: 25,380 hours, 2,850 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic Line
- Condition: Leaking
- Location: Nlg Steering
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201901142004

## Discrepancy

CLIMBING THROUGH 17,000 FEET, LOST CENTER HYDRAULIC PRESSURE AND QUANTITY.  EMERGENCY DECLARED AND FLIGHT LANDED WITHOUT FURTHER INCIDENT.  THE AIRCRAFT WAS GROUNDED.  MAINTENANCE ACCOMPLISHED ATBT AND REPLACED HYDRAULIC SYSTEM PRESSURE,  NO CONTAMINATION FOUND IAW AMM 29-11-41. MAINTNENACE ALSO FOUND MAIN LANDING GEAR TRUCK STEERING ACTUATOR LINE LEAKING AND REPLACED LINE IAW AMM 32-53-00 AND PERFORMED SATISFACTORY OPERATIONAL CHECK.

---
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.