SDR ASAA2016030115711

Service difficulty report · Autopilot Sys · Boeing 737990ER

Difficulty date: March 1, 2016
Submitted: March 3, 2016
Operation: Air carrier
Aircraft: N442AS
Make and model: Boeing 737990ER
Aircraft serial: 43293
Aircraft time: 8,980 hours, 2,910 cycles
System (JASC): 2210 · Autopilot System
Part: Autopilot 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

COUPLED CAT III APPROACH ACFT ROLLED 10 DEGREES LT AT 60 FT, AUTOPILOT WAS DISCONNECTED MANUALLY, NORMAL LANDING. ACFT GROUNDED. DFCS'S SHOW NO RELATED FAULTS ON DAY DISCREPANCY OCCURRED. HGS FFR SHOWED AN ILS ANOMOLY FAULT. PERFORMED FIM 22-11, TASK 825. LAND VERIFY TEST, AMM 22-11-00-700-801, GOOD.