Service difficulty report · Autoland Sys · Boeing 737990ER

Difficulty date
June 19, 2017
Submitted
June 30, 2017
Operation
Air carrier
Aircraft
N478AS
Make and model
Boeing 737990ER
Aircraft serial
44105
Aircraft time
7,742 hours, 2,589 cycles
Part
Autoland 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

AUTOLAND UNSUCCESSFUL, LEFT OF CENTERLINE 60 FEET. ACFT GROUNDED. IAW AMM 22-00-01-730-807 REVIEWED FAULTS DFCS HISTORY BITE GROUP NR 20. NO FAULTS FOR AUTOLAND. PERFORMED DFCS LAND VERIFY BITE GROUP NR 49 IAW AMM 22-11-00-700-801 AND ELEVATOR POSITION SENSOR TEST BITE GROUP NR 47 IAW AMM 22-11-30-710-801. BOTH TESTS PASSED, NO FAULTS, NO CURRENT FAULTS. CHECKED HGS FAULT HISTORY IAW SMM 34-36-00 - NO FAULTS. ALL TESTS PASSED, NO FAULTS NOTED.