# SDR ASAA2023100345422

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 3, 2023
- Submitted: October 4, 2023
- Operation: Air carrier
- Aircraft: [N577AS](https://openairdocs.org/aircraft/N577AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35186
- Aircraft time: 59,159 hours, 17,590 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: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023100345422

## Discrepancy

AUTOPILOT DISCONNECTED DURING CRUISE. NO CAUSE DETERMINED. REENGAGED WITHOUT ISSUE. GROUNDED - YES. (RESOLVED ON W/O: 1972133 TASKCARD: N/R-00001 ) ACCOMPLISHED DFCS LAND VERIFY TEST REF AMM 22-11/201 AND HGS SYSTEM TEST REF SMM 34-36-00. OPS CHECK GOOD. ALL TESTS PASS. NO HISTORY ON 'A' AUTO PILOT 30 DAYS. REMOVED PLACARD C/N 03023577. NO MAINTENANCE PROCEDURES TO REVERSE. THIS CLEARS MEL 22-1F AND MEL 22-99B. SEE L/P 60618386 FOR A/C APPROACH SURVEY. SEAMC NOTIFIED.

---
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.