# SDR ASAA2019111261255

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 2019
- Submitted: November 13, 2019
- Operation: Air carrier
- Aircraft: [N562AS](https://openairdocs.org/aircraft/N562AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35091
- Aircraft time: 50,160 hours, 14,925 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Autopilot Sys
- Condition: Malfunctioned
- Stage of operation: AP
- 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/ASAA2019111261255

## Discrepancy

ON APPROACH WITH THE GOAL TO FLY AN AUTOLAND BOTH A/P WERE SELECTED AND A/T DISENGAGED UPON INTERCEPTING LOCALIZER. WE TRIED RE-ENGAGING A/T TO NO AVAIL. CHANGED TO HGS A3 APPROACH AND DISCONNECTED A/P, HGS SUCCESSFUL. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 22-31/802 FOR MX MESSAGE 22-31543, LOGGED IN INFLIGHT FAULTS. CURRENT STATUS AND INTERACTIVE TESTS PASS. GROUND VERIFICATION SUCCESSFUL.

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