Service difficulty report · Autopilot Sys · Boeing 737890

Difficulty date
May 13, 2013
Submitted
May 15, 2013
Operation
Air carrier
Aircraft
N530AS
Make and model
Boeing 737890
Aircraft serial
36578
Aircraft time
12,437 hours, 3,742 cycles
Part
Autopilot Sys
Condition
Malfunctioned
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

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.