# SDR UIEA2026070200567

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 2, 2026
- Submitted: July 7, 2026
- Operation: Air carrier
- Aircraft: [N476MC](https://openairdocs.org/aircraft/N476MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29256
- Aircraft time: 105,135 hours, 19,139 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 4040800911
- Part serial: 31119249
- Condition: Faulted
- Location: Zone 100
- 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/UIEA2026070200567

## Discrepancy

LOSS OF RT ADC, AND RT AOA IN FLIGHT WITH C/B TRIPPED.  R & R RIGHT ADC IAW AMM 34-12-01-401, REV 116 & IPC 34-12-01-01B, REC 92. IAW FIM TASK 34-12 TASK 869 IAW CMC MSG 34653. PERFORMED GRD TEST OF RIGHT ADC IAW AMM 34-12-00/501. ALL TEST PASSED.

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