Service difficulty report · Warning Message · Boeing 737990ER

Difficulty date
August 29, 2019
Submitted
August 31, 2019
Operation
Air carrier
Aircraft
N477AS
Make and model
Boeing 737990ER
Aircraft serial
40716
Aircraft time
17,058 hours, 5,411 cycles
Part
Warning Message
Condition
False Activation
Location
Autoland
Stage of operation
AP
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

ON HGS AIII AND AUTOLAND APPROACH, RECEIVED APPROCH WARNING ANNUNCIATION AT ABOUT 50' AGL. ACFT WAS TRACKING ABOUT 50' OR MORE TO THE LEFT. WIND WAS 170 DEGREES/11 KTS AT 500'. CRITICAL AREA WAS CLEAR. GROUNDED - YES. ACCOMPLISHED LAND VERIFY TEST IAW AMM 22-11-00-700-801. ALL TESTS PASSED WITH NO FAULTS LOGGED. GROUND VERIFICATION SUCCESSFUL.