SDR ASAA1058546

Service difficulty report · Unknown · Boeing 737890

Difficulty date: November 25, 2010
Submitted: November 30, 2010
Operation: Air carrier
Aircraft: N560AS
Make and model: Boeing 737890
Aircraft serial: 35179
Aircraft time: 16,308 hours, 5,117 cycles
System (JASC): 7320 · Fuel Controlling System
Part: Unknown
Condition: Malfunctioned
Location: Nr 1 Engine
Stage of operation: IN
How discovered: O
Nature of condition: O
Precautionary procedure: A

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 FAULT LONG TIME MESSAGE NR 73-31351 (THE APL VOLTAGE INPUT TO THE EEC IS OUT OF RANGE) AT NR 1 ENG. DEFER FOR 450 FLT HRS PER T/C 78273000. PERFORMED FIM TASK 73-22-00-810-808. PER STEP E (D) NO MAINTENANCE MESSAGES APPEARED ON THE FMC CDU ENGINE BITE CHECKED RECENT FAULTS AND FAULT HISTORY. SUSPECT A MOMENTARY LOSS OF ELECTRICAL POWER TO THE APPLICABLE CHANNELS OF THE EEC OR AN INTERMITTENT FAULT.