SDR ASAA2018041424284

Service difficulty report · Fault Code · Boeing 737890

Difficulty date: April 14, 2018
Submitted: May 23, 2018
Operation: Air carrier
Aircraft: N570AS
Make and model: Boeing 737890
Aircraft serial: 35185
Aircraft time: 42,524 hours, 12,620 cycles
Engine: Cfmint CFM567B27
System (JASC): 7330 · Engine Fuel Indicating System
Part: Fault Code
Condition: False Activation
Location: Nr 2 Engine
Stage of operation: IN
How discovered: O
Nature of condition: N
Precautionary procedure: K

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

What was found

WHILE ACCOMPLISHING T/C 78273000, FOUND LONG TIME FAULT. CODE/MSG NUMBER: 73-21072 - THE FUEL FILTER SIGNALS DISAGREE ON NR 2 ENGINE. ACFT GROUNDED. ACCOMPLISHED FIM 73-05 TASK 801 FOR FAULT 73-21072 AND PERFORMED EEC TEST FOR THE NR 2 ENGINE IAW FIM 73-00 TASK 801. NO FAULTS NOTED ON ANY LEG, INPUT MONITORING OF THE BYPASS FILTER SWITCHES SHOWS CORRECT STATES, AND THE EEC TEST PASSED. AIRCRAFT SHOWS NO RECENT SIMILAR HISTORY.