# SDR AALA20111128DFW01

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 28, 2011
- Submitted: December 1, 2011
- Operation: Air carrier
- Aircraft: [N437AA](https://openairdocs.org/aircraft/N437AA), registered now
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 49455
- Aircraft time: 75,781 hours, 35,042 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic Line
- Condition: Cracked
- Location: Hydraulic Sys
- Stage of operation: LD
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20111128DFW01

## Discrepancy

DFW - CREW REPORTED RIGHT HYDRAULIC SYSTEM FAILED.  EMERGENCY DECLARED FLIGHT LANDED DFW WITHOUT INCIDENT.  AIRCRAFT REMOVED FROM SERVICE.  REPLACED PRESSURE HYDRAULIC LINE AT RUDDER CONTROL VALVE THAT WAS CRACKED.  SYSTEM GROUND CHECK NORMAL OPERATION.

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