SDR ASAA2018062195141

Service difficulty report · Autopilot Sys · Boeing 737890

Difficulty date: June 19, 2018
Submitted: June 21, 2018
Operation: Air carrier
Aircraft: N513AS
Make and model: Boeing 737890
Aircraft serial: 35192
Aircraft time: 37,345 hours, 11,211 cycles
System (JASC): 2210 · Autopilot System
Part: Autopilot Sys
Condition: Malfunctioned
Location: A
Stage of operation: CR
How discovered: O
Nature of condition: F
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AUTOPILOT A DISCONNECTED DURING CRUISE, WITH ALL OTHER INDICATIONS NORMAL. AUTOPILOT A WAS ENGAGED BUT DISCONNECTED EARLY DURING DESCENT, AUTOPILOT B USED FOR REMAINDER OF FLIGHT. ACFT GROUNDED. FLIGHT FAULT REVIEW LOGGED MCP DATA INV, MESSAGE 22-11607, ACCOMPLISHED DFCS MCP TEST IAW FIM 22-11, TASK 803, NO CURRENT FAULT ALL TEST OPS CHECKS PASSED.