# SDR ASAA2016040516248

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 5, 2016
- Submitted: April 7, 2016
- Operation: Air carrier
- Aircraft: [N508AS](https://openairdocs.org/aircraft/N508AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35691
- Aircraft time: 29,589 hours, 9,006 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Autopilot Sys
- Condition: Malfunctioned
- 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/ASAA2016040516248

## Discrepancy

"A" AUTOPILOT DISENGAGED TWICE DURING FLIGHT AT CRUISE ALTITUDE. USED "B" A/P FOR REMAINDER, NO ISSUES.  ACFT GROUNDED.  FFR SHOWED 2 FAULTS FOR MCP.  ACCOMPLISHED DFCS LRU INTERFACE TEST FOR MCP, BITE GROUP NR 32, LAND VERIFY, BITE GROUP NR 49, AND HGS SENSOR TEST FCC/AT, REF HGS SMM 34-36-00. ALL TEST PASS.

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