# SDR CALA2021081801361

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 2021
- Submitted: August 18, 2021
- Operation: Air carrier
- Aircraft: [N38473](https://openairdocs.org/aircraft/N38473), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 38702
- Aircraft time: 26,747 hours, 9,499 cycles
- System (JASC): [3421 · Attitude Gyro and Indicating System](https://openairdocs.org/jasc/3421)
- Part: Adiru
- Part number: HG2050AC07
- Condition: Faulted
- Location: Nr 1
- 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/CALA2021081801361

## Discrepancy

CA DG FAIL AFTER T/O PERFORMED ADIRU BITE FOUND 7 FAULTS RELATED TO #1 ADIRU. REMOVED AND REPLACED #1 ADIRU REF AMM 34-21-01 ALL TESTS PASSED. PERFORMED LAND VERIFY REF AMM 22-11-00. ALL TESTS PASSED ACFT REMAINS "NO AUTOLAND" STATUS DUE TO L/P 6869206 A/T MEL.

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