Service difficulty report · Lru · Boeing 737990ER

Difficulty date
August 5, 2022
Submitted
August 9, 2022
Operation
Air carrier
Aircraft
N453AS
Make and model
Boeing 737990ER
Aircraft serial
36354
Aircraft time
32,303 hours, 10,195 cycles
Part
Lru
Part number
UNKNOWN
Condition
Faulted
Location
Unknown
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

AUTOLAND NO SUCCESSFUL. ATTEMPTED TO LAND GREATER THAN 50' LEFT OF CENTERLINE. WINDS 350/8 RWY 03. CRITICAL AREA PROTECTED. GROUNDED - YES. INITIAL EVALUATION, PERFORMED HGS SYSTEM TEST IAW B737-900 SMM 34-36-00 SEC 500. FAULT REVIEW REVEALED ILS ANOMALY DETECTED ON LEG 7, WHICH WOULD LINE UP WITH DEFECT ORIGINATION DATE. ALSO NOTED: FCC1 ON 2 LEGS IN LAST 20. NO OTHER DEFECTS NOTED. SYSTEM TEST PASS. PERFORMED DFCS FAULT REVIEW IAW B737-900 AMM 22-11-00-740-806. NO RELEVANT FAULTS NOTED. PERFORMED DFCS LAND VERIFY IAW AMM 22-11-00-700-801. ALSO REF B737-900 FIM 22-11 TASK 899. LRU REPLACE TEST FOR FCC IAW B737-900 22-11-00-740-815 DUE TO HGS FAULTS NOTED. ALL TESTS PASS. NO ADDITIONAL FAULTS NOTED. NO HISTORY FOR THIS DEFECT.