# SDR UIEA2020072301600

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2020
- Submitted: July 23, 2020
- Operation: Air carrier
- Aircraft: [N1489A](https://openairdocs.org/aircraft/N1489A), registered now
- Make and model: Boeing 767-31K
- Registry model: [Boeing 767-31K](https://openairdocs.org/model/boeing-767-31k) (OpenAirDocs)
- Aircraft serial: 27206
- Aircraft time: 107,632 hours, 21,305 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 4040800916
- Part serial: 1196061
- Condition: Malfunctioned
- Location: Lt & Rt
- Stage of operation: CR
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020072301600

## Discrepancy

AIRSPEED DISAGREE, ALTITUDE DISAGREE, AILERON LOCK OUT, RUDDER RATIO EICAS MESSAGE.  REMOVED AND REPLACED THE AIR DATA COMPUTER, LEFT AND RIGHT SIDE IAW AMM 34-12-01. OPS CHECKED GOOD. PERFORMED A TEST OF PITOT STATIC SYS IAW AMM 34-11-00, SYSTEM FOUND TO BE WITHIN LIMITS.

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