# SDR CA190320019

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 2019
- Submitted: August 17, 2020
- Operation: General aviation
- Make and model: Boeing 737-7CT
- Registry model: [Boeing 737-7CT](https://openairdocs.org/model/boeing-737-7ct) (OpenAirDocs)
- Aircraft time: 44,919 hours
- Engine: Cfmint CFM567B242
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adiru
- Part number: HG2050AC11
- Part serial: 02057672
- Condition: Faulted
- Location: Left Hand
- Part time: 57,689 hours, 150 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: H
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA190320019

## Discrepancy

(CAN)  PERFORMED AN AIR TURN BACK. THIS WAS DUE TO A HEADING DISAGREE INDICATION ON DEPARTURE. TROUBLESHOOTING FOUND THE LT ADIRU WAS AT FAULT. UNIT WAS REPLACED AND SYSTEM WAS CHECKED SERVICEABLE IAW AMM 34-21-01.

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