Service difficulty report · Autoland Sys · Boeing 737990ER

Difficulty date
March 13, 2017
Submitted
March 15, 2017
Operation
Air carrier
Aircraft
N474AS
Make and model
Boeing 737990ER
Aircraft serial
40715
Aircraft time
6,809 hours, 2,251 cycles
Part
Autoland Sys
Condition
Malfunctioned
Stage of operation
LD
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

HGS / AUTOLAND CATIII UNSUCCESSFUL. ACFT GROUNDED. PERFORMED REQUIRED LWMP TESTS IAW AMM 22-00-01. PERFORMED FIM 22-11, TASK 801, BITE 20, AND 22-11-00/200, BITE 49. ALL TESTS OK. PERFORMED HGS SYSTEM TEST IAW SMM 34-36-00. TESTED OK.