SDR ASAA2014082208924

Service difficulty report · Indicator · Boeing 737890

Difficulty date: August 22, 2014
Submitted: August 25, 2014
Operation: Air carrier
Aircraft: N557AS
Make and model: Boeing 737890
Aircraft serial: 35176
Aircraft time: 31,488 hours, 9,293 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Indicator
Part number: UNKNOWN
Condition: Malfunctioned
Location: Lnav
Stage of operation: TX
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

DURING TAXI OUT, COULD NOT GET LNAV TO ENGAGE. ACFT GROUNDED. ACCOMPLISHED DFCS INTERFACE TEST FOR MCP BITE GROUP NR 32, REF MM 22-11-34, LAND VERIFY TEST REF MM 22-11-00, AND HGS SENSOR TEST FOR FCC AT REF SMM 34-36-00. NO FAULTS NOTED. NO HISTORY LAST 30 DAYS. ACFT REMAINS CAT IIIA AUTOLAND AND HGS CAPABLE, STATUS PLACARD SCREW REFLECTS SAME.