Service difficulty report · Relay · Boeing 777222

Difficulty date
August 25, 2013
Submitted
August 27, 2013
Operation
Air carrier
Aircraft
N793UA
Make and model
Boeing 777222
Aircraft serial
26946
Aircraft time
69,955 hours, 9,942 cycles
Engine
Pwa PW40903
Part
Relay
Condition
Faulty
Location
Eec
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

ENGINE ELECTRONIC ENGINE CONTROL MODE L MESSAGES 73-61011. TROUBLESHOOTING FOUND ENGINE RELAY UNIT M73005 AT FAULT. NEED TO REPLACE EMERGENCY RELAY UNIT, IAW FIM 71-11 TASK 812, FIM 77-11 T812. ACTIONED & LEFT ENGINE EMERGENCY RELAY UNIT REPLACED IDLE RUN NO FAULT. ELECTRONIC ENGINE CONTROL STATIC & PROBE HEAT TEST VIA MAT PASSED.