Service difficulty report · Autoland Sys · Boeing 737990ER

Difficulty date
February 1, 2020
Submitted
February 4, 2020
Operation
Air carrier
Aircraft
N434AS
Make and model
Boeing 737990ER
Aircraft serial
61620
Aircraft time
15,406 hours, 4,872 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 III AUTOLAND UNSUCCESSFUL AIRCRAFT ATTEMPTED TO LAND 50 FEET LEFT OF CENTERLINE. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 22-11 TASK 825 "AIRPLANE ALIGNMENT PROBLEMS DURING AUTOLAND APPROACH" FAULT ISOLATION & DFCS LAND VERIFY TEST (GP 49) REF B737-900 AMM 22-11-00 & HGS SYSTEM TEST REF SMM 34-36-00, OPS CK NML.