# SDR ASAA201910231078

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2019
- Submitted: October 23, 2019
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 23,774 hours, 7,694 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/ASAA201910231078

## Discrepancy

AT FL 340 DURING CRUISE, A SINGLE AUTOPILOT DISCONNECT HAPPENED ON CMD "A". AUTOPILOT WAS RE-EMGAGED PM "A" SIDE AND DID NOT OCCUR AGAIN. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 22-11 TASK 801. DFCS BITE FOUND MSG 22-11208 AND 22-11607 IN LEG 1 HISTORY. COMPLETED LRU TESTS 20.00 AND 20.32. ALL TESTS PASS. NO CURRENT FAULTS. INTERMITTENT FAULT. AUTOPILOT OK FOR SERVICE.

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