# SDR DXTA2025043003258

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 2025
- Submitted: April 30, 2025
- Operation: Air carrier
- Aircraft: [N645QS](https://openairdocs.org/aircraft/N645QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0194
- Aircraft time: 6,889 hours, 4,563 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 0110233701
- Part serial: 1U6100073
- Condition: Faulted
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2025043003258

## Discrepancy

DURING CLIMB BOTH ON ADC 2 MESSAGE DISPLAYED. COMPLIED WITH QRH. ALSO NOTED A SLIGHT RUDDER KICK PASING THROUGH 17,000'. REPEAT WRITEUP.   REMOVED #1 ADC GDC7400 P/N 011-02337-01 S/N 1U6100073. INSTALLED CUSTOMER PROVIDED REPAIRED #1 ADC GDC 7400 P/N 011-022337-01 S/N 1U6100418. PERFORMED SOFTWARE AND CONFIGURATION LOADS. NO DEFECTS NOTED, UNIT WAS TESTED TO 55000 FT. REMOVED INOP T1P1 CH B UPPER SENSOR PN 30B7628-01 NSN & INSTALLED CUSTOMER SUPPLIED NEW T1P1 CH B UPPER SENSOR PN 30B7628-01 NSN. PERFORMED ENGINE RUN FOR OPS CHECK OPS CHECK GOOD. REINSTALLED UPPER AND LOWER COWLINGS AS REQUIRED IAW PW PW306D1 EMM 77-20-02. IAW CE-680A AMM 71-10-05, 71-10-10. TW TL- 105036 DUE 06/03/2025. NO DEFECTS NOTED.

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