# SDR ASAA2013051394797

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2013
- Submitted: May 15, 2013
- Operation: Air carrier
- Aircraft: [N530AS](https://openairdocs.org/aircraft/N530AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36578
- Aircraft time: 12,437 hours, 3,742 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: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2013051394797

## Discrepancy

AUTOPILOT A DISCONNECTED TWICE IN CRUISE NO OBVIOUS REASON.  ACFT GROUNDED. MCP DATA INVALID MSG 22-11607- REF FIM TASK 22-11, TASK 817 & 803 MCP, OPS TEST OK.  FULL MCP OVERNIGHT TEST PASSED. NO FAULTS NOTED- CURRENT STATUS OK. GROUND VERIFICATION OF MCP ACCOMPLISHED. NO HISTORY 90 DAYS. REF MM 22-00-01/201 ACFT REMAINS CAT 3A AUTOLAND & HGS QUALIFIED. STATUS PLACARD REFLECTS THE SAME.

---
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.