SDR ASAA2019011327781

Service difficulty report · Unknown · Boeing 737990ER

Difficulty date: January 13, 2019
Submitted: January 16, 2019
Operation: Air carrier
Aircraft: N459AS
Make and model: Boeing 737990ER
Aircraft serial: 36352
Aircraft time: 19,579 hours, 6,444 cycles
System (JASC): 2210 · Autopilot System
Part: Unknown
Condition: Malfunctioned
Location: Autopilot Sys
Stage of operation: AP
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

WHILE CONDUCTING AUTOLAND, IN VISUAL CONDITIONS (RUNWAY IN SIGHT) AIRCRAFT DRIFTED LEFT OF CENTERLINE AND CONTINUED TOWARDS RUNWAY EDGE AT 100 FT RADAR. DISCONNECTED AUTOPILOT AND NORMAL LANDING HGS WORKED FINE. WINDS CALM, NO KNOWN OBSTRUCTIONS NEAR GROUND ANTENNA. GROUNDED - YES. ACCOMPLISHED AMM TASK 22-00-01-730-807 FOR INBOUND AUTOLAND CONDITION. NO FAULTS FOR EITHER CHANNELS NOTED ON DFCS FAULT REVIEW, AND LAND VERIFY TESTS ARE NORMAL.