# SDR CALA2011022800110

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2011
- Submitted: February 28, 2011
- Operation: Air carrier
- Aircraft: [N74007](https://openairdocs.org/aircraft/N74007), registered now
- Make and model: Boeing 777224
- Aircraft serial: 29477
- Aircraft time: 59,443 hours, 6,359 cycles
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Unknown
- Condition: Malfunctioned
- Location: Rudder
- Stage of operation: AP
- How discovered: O
- Nature of condition: E, F
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2011022800110

## Discrepancy

FLT 7000 WITH 56KN DIRECT CROSS WIND FROM RT, A/C HAD CONTINUOUS SMOOTH UNCOMMANDED RUDDER INPUTS.  YAW DAMPER INDICATIONS WERE 1/2 LEFT TO 1/3 RIGHT DISPLACEMENT.  THIS CONDITION LASTED FOR AS LONG AS WIND WAS REG L/P 8751429 FOR CORRECTIVE ACTION.. LOG PG 8751429 CONT, WITH A/P ON AND OFF NO CHANGE.  EMERGENCY WAS DECLARED FOR LANDING PRIORITY.  C9005 STA EWR  27 FEB 11 ATA 02700 / NO EICAS MSG NOTED, NO MX MSG NOTED.  PERFORMED PFCS ACTUATOR / CONFIDENCE, ACTUATOR CONTROL ELE MONITOR TEST AND GUST SUPPRESSION PRESSURE TRANSDUCER TEST PER FIM.  ALL TEST PASSED.  NO FAULTS NOTED.

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