# SDR RYNA201210020038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 2, 2012
- Submitted: October 4, 2012
- Operation: Air carrier
- Aircraft: N637TW
- Make and model: Boeing 767-33AER
- Registry model: [Boeing 767-33AER](https://openairdocs.org/model/boeing-767-33aer) (OpenAirDocs)
- Aircraft serial: 25403
- Aircraft time: 66,080 hours, 14,205 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 4040800906
- Part serial: 377751377752
- Condition: Failed
- Location: Zone 100
- Part time: 66,080 hours, 14,205 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/RYNA201210020038

## Discrepancy

DUAL AIR DATA COMPUTER FAILURE.  RETURNED TO LAND AT RFD.  REMOVED AND REPLACED LEFT AND RIGHT AIR DATA COMPUTERS PER AMM 34-12-01.  PERFORMED HIGH LEVEL LEAK CHECK PER AMM 34-11-00.  BOTH LEFT AND RIGHT PITOT STATIC SYSTEMS CHECKED NORMAL AND VERIFIED ACCURACY WITHIN LIMITS AT FIELD, 5000, 10,000, 20,000, 30,000,AND 40,000 FT.

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