# SDR 9JLA20110801002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2011
- Submitted: August 29, 2011
- Operation: Air carrier
- Aircraft: [N928WK](https://openairdocs.org/aircraft/N928WK), registered now
- Make and model: Amd FALCON50MYST
- Aircraft serial: 279
- Aircraft time: 4,710 hours, 3,290 cycles
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Unknown
- Part number: 10504307
- Part serial: 1156
- Condition: Malfunctioned
- Location: Rudder
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA20110801002

## Discrepancy

CREW REPORTED THAT THE "RUDDER WAS STIFF AFTER COLD SOAK" TROUBLSHOOTING REALLY COULDN'T DUPLICATE DISCREPANCY, BUT THE RUDDER AFU WAS LUBED DURING A RECENT C CHECK.  REMOVED THE RUDDER AFU P/N 105043-07 S/N 1156.  INSTALLED A REPAIRED AFU S/N 1138.  CREW REPORTED THAT THE RUDDER SYSTEM OPERATED CORRECTLY AFTER REMOVED AND REPLACED.

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