SDR ASAA2019122391674

Service difficulty report · Autopilot Sys · Boeing 737890

Difficulty date: December 19, 2019
Submitted: December 24, 2019
Operation: Air carrier
Aircraft: N508AS
Make and model: Boeing 737890
Aircraft serial: 35691
Aircraft time: 43,486 hours, 12,961 cycles
System (JASC): 2210 · Autopilot System
Part: Autopilot Sys
Condition: Disengaged
Location: A System
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

AT FL360 IN SMOOTH CONDITIONS A/P "A" DISENGAGE. NO CAUTIONS LIGHTS OR LIGHTS ON RECALL. REENGAGED A/P "A" & NO FURTHER PROBLEMS. OPERATED NORMAL REST OF FLIGHT. GROUNDED - YES. (RESOLVED ON W/O: 1014603 TASKCARD: N/R-00001 ) FAULT REVIEW SHOWS FAULT MSG 22-11607 "MCP DATA INV". ACCOMPLISHED B737-800 FIM 22-11 TASK 817 "MCP PROBLEM" FAULT ISOLATION, MCP TESTS REF FIM 22-11 TASK 803, DFCS LAND VERIFY TEST (GP 49) REF B737-800 AMM 22-11-00 & HGS SYSTEM TEST REF AMM 34-36-00, OPS CK NML.