Service difficulty report · Autoland Sys · Boeing 737990ER

Difficulty date
December 19, 2016
Submitted
December 21, 2016
Operation
Air carrier
Aircraft
N474AS
Make and model
Boeing 737990ER
Aircraft serial
40715
Aircraft time
5,899 hours, 1,934 cycles
Part
Autoland Sys
Condition
Malfunctioned
Location
Cockpit
Stage of operation
LD
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

AUTOLAND FAILED: A/C DRIFTED 35 FEET LEFT OF CENTERLINE AND THE LEFT WING ROLLED DOWN 3 DEGREES AT ABOUT 50 FEET. WINDS AT 1500 AGL 190 AT 30 KTS, AIRPORT WINDS 030 AT 3 KTS 200 DEGREE WIND SHIFT IN 1500 FEET BUT WITHIN PUBLISHED WIND LIMITS. GROUNDED - YES. PERFORMED FIM 22-11 TASK 825. LAND VERIFY TEST, REF AMM 22-11-00-700-801 SUCCESSFUL. A/C REMAINS CAT III A AUTOLAND AND HGS QUALIFIED. STATUS PLACARD SCREW CHECKED AND REFLECTS SAME.