# SDR 0609200601

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 8, 2006
- Submitted: June 12, 2006
- Operation: Air carrier
- Aircraft: [N354MC](https://openairdocs.org/aircraft/N354MC), registered now
- Make and model: Boeing 747341
- Aircraft serial: 23394
- Aircraft time: 58,677 hours, 11,288 cycles
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Control Unit
- Part number: 382200019
- Part serial: 1394
- Condition: Failed
- Location: Rudder
- Stage of operation: CR
- How discovered: V
- Nature of condition: K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/0609200601

## Discrepancy

APPROXIMATELY ONE HOUR AFTER DEPARTURE FROM ELIX, NR 3 HYD SYSTEM LOSS.  AS PER CHECK SHEET NR 3 EDP TO -SUPPLY OFF-, NR 3 ENGINE RUNNING.  RETURN TO ELIX, NO FURTHER INCIDENT.  FOUND INOPERATIVE RUDDER POWER CONTROL ASSY.  REMOVED INOPERATIVE UNIT, AND REPLACED WITH SERVICEABLE UNIT IAW MFG MM 27-21-16 & 12-12-01.  SATISFACTORY PERFORMED LEAK CHECK, FUNCTIONAL/OPERATIONAL CHECK, OPS CHECK GOOD.  AIRCRAFT RETURNED TO SERVICE.

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