# SDR ASAA2020021873191

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 2020
- Submitted: February 19, 2020
- Operation: Air carrier
- Aircraft: [N508AS](https://openairdocs.org/aircraft/N508AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35691
- Aircraft time: 44,159 hours, 13,130 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Autopilot Sys
- Condition: Malfunctioned
- Location: B System
- 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/ASAA2020021873191

## Discrepancy

ON TWO SEPARATE OCCASIONS THE AUTOPILOT B DISENGAGED FOR NO APPARENT REASON DURING CRUISE FLT. GROUNDED - YES. BOTH A&B AUTOPILOT LOGGED FAULT 22-11607 LAST FLT. PERFORMED B737-800 FIM 22-11 TASK 817 & NO FAULTS FOUND. CURRENT STATUS OF BOTH A&B AUTOPILOTS PASSED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.