# SDR 3EJA202104070001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 2021
- Submitted: April 7, 2021
- Operation: Air carrier
- Aircraft: [N730JS](https://openairdocs.org/aircraft/N730JS), registered now
- Make and model: Cessna 525B
- Registry model: [Cessna 525B](https://openairdocs.org/model/cessna-525b) (OpenAirDocs)
- Aircraft serial: 525B0270
- Aircraft time: 5,776 hours, 4,619 cycles
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Valve
- Part number: 53071
- Part serial: 1426C
- Condition: Leaking
- Location: Rudder Bias
- Part time: 5,776 hours, 4,619 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/3EJA202104070001

## Discrepancy

ON TAKE-OFF RUDDER FULL DEFLECTION AFTER TRIMMING, CONTINUED ACTUATING RUDDER INPUTS-NOT BY HUMAN INTERACTION. AFFECTED AILERON EFFICIENCY. REMOVED AND REPLACED RUDDER BIAS VALVE. OPS CK GOOD REF MM 27-20-01

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