Service difficulty report · Eec · Boeing 737990ER

Difficulty date
September 25, 2015
Submitted
September 25, 2015
Operation
Air carrier
Aircraft
N477AS
Make and model
Boeing 737990ER
Aircraft serial
40716
Aircraft time
969 hours, 308 cycles
Engine
Cfmint CFM567B27E
Part
Eec
Condition
Malfunctioned
Location
Nr 1 Engine
Stage of operation
IN
How discovered
9
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

WHILE PERFORMING T/C 78273000, NR 1 ENGINE SHORT TIME FAULT 73-10341 "THE FMV POSITION SIGNAL IS OUT OF RANGE" IS DISPLAYED. LOGGED ON FLIGHT LEGS 1&3. ACFT GROUNDED. PERFORMED AN EEC BITE OF NR 1 ENGINE IAW FIM TASK 73-25-803, STEP E. THERE WERE NO CURRENT OR HISTORICAL FAULTS PRESENT. PERFORMED AN ACTUATORS TEST IAW THE SAME FIM TASK, STEP E. THERE WERE NO FAULTS. PERFORMED A DVI OF ELECTRICAL CONNECTORS DP0501, HMU, AND DP0505, ELECTRONIC ENGINE CONTROL. NO DISCREPANCIES NOTED.