# SDR AALA201912099030

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2019
- Submitted: December 9, 2019
- Operation: Air carrier
- Aircraft: [N755AN](https://openairdocs.org/aircraft/N755AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30263
- Aircraft time: 74,650 hours, 9,363 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Computer
- Part number: COM5124
- Part serial: 1124
- Condition: Faulty
- Location: Adfc
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201912099030

## Discrepancy

AIRCRAFT NOT GROUNDED: ADFC L STATUS MESSAGE DISPLAYED DURING CRUISE AND AUTOPILOT DISCONNECTED. REMOVED AND REPLACED LF AFDC. VERIFIED CURRENT SOFTWARE INSTALLED IAW IPC 22-11-01-01. ACCOMPLISHED AFDC INSTALLATION AND SYSTEMS TESTS IAW AMM 22-11-01 & 22-11-00.

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