Service difficulty report · Autopilot Sys · Boeing 737890

Difficulty date
April 18, 2013
Submitted
April 23, 2013
Operation
Air carrier
Aircraft
N584AS
Make and model
Boeing 737890
Aircraft serial
35682
Aircraft time
21,901 hours, 6,595 cycles
Part
Autopilot Sys
Condition
Malfunctioned
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

ON CLIMBOUT, AUTOPILOT NR 1 CMDA DISENGAGED. RECONNECTED AND IT WORKED NORMALLY FOR THE REST OF FLIGHT. THREE INFLIGHT FAULTS FOR VNAV/LNAV INCORRECT DATA. PERFORMED LWMP TESTS REF FIM 22-11/801 BITE GRP NR 20 AMM 22-11-00/201 BITE GRPNR 49 LAND VERIFY AND MM 34-36-00 HGS SYS, TEST- ALL PASS. GROUND VERIFICATION OPS NORMAL. ACFT REMAINS CAT 3 A AUTOLAND/HGS QUALIFIED, PLACARD SCREW VERIFIED SAME.