SDR ASAA2016033016170

Service difficulty report · Warning Message · Boeing 737990ER

Difficulty date: March 30, 2016
Submitted: April 1, 2016
Operation: Air carrier
Aircraft: N471AS
Make and model: Boeing 737990ER
Aircraft serial: 41703
Aircraft time: 5,897 hours, 1,948 cycles
Engine: Cfmint CFM567B27E
System (JASC): 7320 · Fuel Controlling System
Part: Warning Message
Condition: False Activation
Location: Eec
Stage of operation: NR
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

ELECTRONIC ENGINE CONTROL ALTN MODE LIGHTS ILLUMINATED ENGINE NR 1 AND ENGINE NR 2 FAULT CODES 73008051 AND 73008052. ACFT GROUNDED. ELECTRONIC ENGINE CONTROL BITE SHOWS NR 1 ENGINE MAINT MESSAGE 73-31441 AND 73-31611, NR 2 ENGINE SHOWS 73-31442 AND 73-31612, REF FIM 73-00, TASK 801. PERFORMED FIM TASK 73-24, TASK 815 AND 73-23, TASK 804. ENGINE RUN NR 1 AND NR 2 MOTORS, NO FAULTS LOGGED. NR 1 AND NR 2 ELECTRONIC ENGINE CONTROL BITES ARE NORMAL, REF FIM 73-00, TASK 801. CURRENT STATUS NO FAULTS.