# SDR ASAA2020040932626

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 5, 2020
- Submitted: April 10, 2020
- Operation: Air carrier
- Aircraft: [N431AS](https://openairdocs.org/aircraft/N431AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43255
- Aircraft time: 25,536 hours, 8,253 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control Panel
- Part number: 8221567102
- Part serial: 1876M6
- Condition: Failed
- Location: Cockpit
- Part time: 29,166 hours, 12,384 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020040932626

## Discrepancy

F/O COURSE WINDOW SEGMENTS IMPROPERLY ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED DFGC MODE CONTROL PANEL. OPS CKS GOOD/ F/O COURSE SEGMENTS OPERATE NORMALLY, ALL TESTS PASS REF B737-900 AMM 22-11-34-400-801. ETOPS SIGNIFICANT SYSTEM GROUND VERIFICATION SUCCESSFUL.

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