Service difficulty report · Autoland Sys · Boeing 737990ER

Difficulty date
September 14, 2017
Submitted
September 18, 2017
Operation
Air carrier
Aircraft
N409AS
Make and model
Boeing 737990ER
Aircraft serial
41733
Aircraft time
18,663 hours, 6,147 cycles
Part
Autoland Sys
Condition
Malfunctioned
Stage of operation
LD
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

AUTOLAND WITH HGS MONITOR NOT SUCCESSFUL. AUTOPILOT DID NOT INITIATE NOSE UP TRIM AT OR BELOW 400 AGL AND ALTHOUGH FLARE ARM WAS INDICATED. DID NOT FLARE AT 50 FT. HGS INDICATED APPROACH WARN AND DISCONNECTED AUTOPILOT AND AUTOTHROTTLE AND LANDED MANUALLY. ACFT GROUNDED. ACCOMPLISHED DFCS BITE IAW AMM 22-11-00-810-801. NO CURRENT FAULTS OR IN HISTORY..