# SDR ASAA2022030337609

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 3, 2022
- Submitted: March 5, 2022
- Operation: Air carrier
- Aircraft: [N586AS](https://openairdocs.org/aircraft/N586AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35189
- Aircraft time: 51,952 hours, 15,592 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- 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/ASAA2022030337609

## Discrepancy

AUTOPILOT B DISCONNECTED FOR 15 MINUTES AT FL350. F/O NAV DISPLAY ALSO LOCKED UP. UNABLE TO MOVE HEADING INDICATOR COMPLETED MCP LOCKUP, NO HELP. AUTOPILOT AND NAV DISPLAY WAS RESTORED 15 MINUTES LATER. GROUNDED - YES. DFCS BITE LOGGED 22-11607, MCP DATA INV. PERFORMED B737-800 FIM 22-11 TASK 817, ALL TESTS NORMAL REF FIM 22-11 TASK 803.

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