Service difficulty report · Autopilot Sys · Boeing 737890

Difficulty date
June 5, 2012
Submitted
June 7, 2012
Operation
Air carrier
Aircraft
N516AS
Make and model
Boeing 737890
Aircraft serial
39044
Aircraft time
13,139 hours, 4,240 cycles
Engine
Cfmint CFM567B273
Part
Autopilot Sys
Condition
Malfunctioned
Stage of operation
AP
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

ON APPROCH, ILS 29 AUTOPILOT INITIALLY CAPTURED LOCALIZER WITH BOTH CHANNELS ENGAGED, APPOX 5 SECONDS LATER AUTOPILOT DISENGAGED RE-ENGAGED AND SAME THING HAPPENED. PERFORMED LIBRARY GROUP 49 LAND, VERIFIED SYS, OP CHECKED GOOD.