# SDR AALA09051300004A

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2009
- Submitted: July 15, 2009
- Operation: Air carrier
- Aircraft: [N573AA](https://openairdocs.org/aircraft/N573AA), registered now
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 53092
- Aircraft time: 24,733 hours, 10,409 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Failed
- Location: Hyd System
- Stage of operation: DE
- 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/AALA09051300004A

## Discrepancy

RIGHT HYDRAULIC FAILURE OCCURRED ON DESCENT.  EMERGENCY DECLARED LANDED ATL WITHOUT INCIDENT.  FOUND BLOWN O-RING ON RIGHT HAND THRUST REVERSER CONTROL VALVE. REPLACED O-RING.  SYSTEM GROUND CHECK NORMAL OPERATION. (CLOSED)

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