SDR ASAA2018060925009

Service difficulty report · Unknown · Boeing 737890

Difficulty date: June 9, 2018
Submitted: June 13, 2018
Operation: Air carrier
Aircraft: N569AS
Make and model: Boeing 737890
Aircraft serial: 35184
Aircraft time: 42,985 hours, 13,174 cycles
System (JASC): 7320 · Fuel Controlling System
Part: Unknown
Condition: Malfunctioned
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 FAULT ON NR 1 ENGINE. SHORT TIME FAULT, MSG NUMBER: 73-11271, THE ALTERNATOR VOLTAGE INPUT TO THE EEC IS OUT OF RANGE. GROUNDED - YES. ACCOMPLISHED T/C 78273000, VERIFIED NR 1 ENG HAVE NO FAULTS MSG FOR THE LAST 5 FLT LEGS. PERFORMED FIM 73-27 TASK 804, NO DEFECTS FOUND, VERIFIED TGB/AGB CHIP DETECTOR IS CLEAN. NR 1 ENG EEC BITE CHECKED GOOD W/O FAULTS AND ENG IDLE RUNS AND LEAKS CHECKED GOOD. CLEARED THIS PLT DEFERRAL.