SDR ASAA2018070425283

Service difficulty report · Unknown · Boeing 737890

Difficulty date: July 4, 2018
Submitted: July 6, 2018
Operation: Air carrier
Aircraft: N563AS
Make and model: Boeing 737890
Aircraft serial: 35180
Aircraft time: 44,518 hours, 13,364 cycles
System (JASC): 2210 · Autopilot System
Part: Unknown
Condition: Malfunctioned
Location: Autopilot Sys
Stage of operation: AP
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

HGS AIII AND AUTOLAND FAILED. ON LOC CAP, BOTH AUTOPILOTS DISCONNECTED. MOMENTARY FMC DISAGREE ON FO'S SIDE ILLUMINATED. MOMENTARY RA FAIL FLAG AT 5000' / FO'S FD DROPPED OFF. IN THE FLARE USING HGS ONLY, THE FLIGHT PATH CUE DISAPPEARED. GROUNDED - YES. RESET SYSTEM AND RAN LAND VERIFY TEST IAW B737-800 AMM 22-11-00/201, OPS CHECK GOOD. RAN HGS TEST IAW MM 34-36-00, OPS CHECK GOOD. AIRCRAFT IS AUTOLAND AND HGS CAT III QUALIFIED.