Service difficulty report · Unknown · Boeing 737890

Difficulty date
September 25, 2018
Submitted
September 27, 2018
Operation
Air carrier
Aircraft
N566AS
Make and model
Boeing 737890
Aircraft serial
35182
Aircraft time
45,166 hours, 13,550 cycles
Part
Unknown
Condition
Malfunctioned
Location
Cockpit
Stage of operation
AP
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

ON FINAL, CAPTAINS FLIGHT DIRECTOR BARS DISAPPEARED DURING ILS. TRIED RECYCLING FD'S BUT COULD NOT GET FD BARS ON CAPTAINS SIDE. FLIGHT MODE ANNUNCIATOR SHOWED VOR/LOC AND GS ON CAPTAINS SIDE. GROUNDED - YES. PERFORMED DFCS BITE PROCEDURE REF FIM 22-11 TASK 801. FAULT REVIEW FOR LEG 1 LOGGED THREE OCCURRENCES OF NO RADIO ALT DATA MAINT MESSAGE 22-11051 RADIO ALT-1. PERFORMED FIM 22-11 TASK 805 INITIAL EVALUATION -NO FAULTS NOTED. (LRRA) BITE PROCEDURE, FIM 34-33 TASK 801 ALSO SHOWED NO FAULTS. ACCOMPLISHED DFCS GROUP NR 12 (FLIGHT DIRECTOR) TEST REF AMM 22-11-00/501, DFCS GROUP NR 49 (LAND VERIFY) TEST REF AMM22-11-00/201 AND HGS SYSTEM TEST REF SMM 34-36-00 ALL TESTS PASSED. A/C APPROACH SURVEY COMPLETED.