SDR ASAA2018082065819

Service difficulty report · Fault Message · Boeing 737990ER

Difficulty date: August 16, 2018
Submitted: August 20, 2018
Operation: Air carrier
Aircraft: N469AS
Make and model: Boeing 737990ER
Aircraft serial: 41702
Aircraft time: 16,137 hours, 5,379 cycles
System (JASC): 3150 · Central Warning
Part: Fault Message
Condition: False Activation
Location: Nr 2 Engine
Stage of operation: IN
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

NR 2 ENGINE BITE TEST SHOWED FAULT MESSAGE 73-30312. THE START SWITCH SIGNAL AND ARINC BUSS DATA DISAGREE. ACFT GROUNDED. CHECKED HISTORY FOUND NO RECENT FAULTS. TESTED EEC NR 1 & 2 AND START SWITCH IAW FIM 73-24 TASK 813. NO DEFECT NOTED.