# SDR C2XA10R1155

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2010
- Submitted: December 21, 2010
- Operation: Air carrier
- Aircraft: [N12122](https://openairdocs.org/aircraft/N12122), registered now
- Make and model: Emb EMB-145XR
- Registry model: [EMB EMB-145XR](https://openairdocs.org/model/embraer-emb-145xr) (OpenAirDocs)
- Aircraft serial: 145684
- Aircraft time: 22,793 hours, 12,175 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 7014700626
- Part serial: 02116677
- Condition: Failed
- Location: Nr 1
- Part time: 22,768 hours, 12,163 cycles
- 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/C2XA10R1155

## Discrepancy

FLIGHT 2746 EWR-YQB FLIGHT CREW REPORTED NR 1 AIR DATA COMPUTER FAILED WITH A RED X OVER NR 1 TAPE.  CREW PERFORMED AIR RETURN TO EWR AND LANDED ACFT UNEVENFULLY.  EWR MX REMOVED AND REPLACED NR 1 ADC AND PERFORMED OPERATIONAL CHECK SUCESSFULLY WITH THE ACFT BEING APPROVED FOR RETURN TO SERVICE.

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