# SDR DALA2023051203754

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 11, 2023
- Submitted: May 12, 2023
- Operation: Air carrier
- Aircraft: [N812NW](https://openairdocs.org/aircraft/N812NW), registered now
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 0784
- Aircraft time: 71,939 hours, 9,530 cycles
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Unknown
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- 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/DALA2023051203754

## Discrepancy

SHIP 3312 AFTER LEVEL OFF AT FL360 A/C WOULD "FISHTAIL" YAW BACK + FORTH FOR ABOUT 10 SEC, STOP FOR A BIT THAN START AGIAN, AS THOUGH DANCING ON RUDDER PEDALS. LASTED ABOUT 1 HOUR CHANGING AUTO PILOT NO HELP. CORRECTIVE ACTION: T/S. ALL APPLICABLE TESTS OK AND NO FAULTS AND COULD NOT DUPLICATE RUDDER OSCILLATION. PER TSM REMOVED AND REPLACED FCPC 1 AND TESTS OK. PERFORMED SUCCESSFUL LAND TEST. (4704682)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.