Service difficulty report · Connector · Boeing 777222

Difficulty date
September 8, 2013
Submitted
October 10, 2013
Operation
Air carrier
Aircraft
N798UA
Make and model
Boeing 777222
Aircraft serial
26928
Aircraft time
68,729 hours, 9,737 cycles
Engine
Pwa PW40903
Part
Connector
Condition
Corroded
Location
Engine
Stage of operation
TX
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

ENGINE SLOW TO SHUT DOWN ON ARRIVAL & ENG FUEL VALVE STATUS MESSAGE DISPLAYED. MAINT MESSAGE 73-60211 IAW FIM 73-22 TASK 801. ACCOMPLISHED WIRING CHECKS, INCORRECT VOLTAGE NOTED AT FMU CONNECTOR DM76001C. FOUND HIGH RESISTANCE BETWEEN D71074P ENGINE RT CORE HARNESS & DM76001C FMU CONNECTOR. FOUND WHITE OXIDATION ON PINS AT D71074P. CLEANED SAME IAW GPM 02-00-20 -002. RESISTANCE & VOLTAGE CHECKS NOW NORMAL. ACCOMPLISHED GROUND IDLE RUN, NR 1ENGINE INDICATIONS NOW NORMAL. STATUS MESSAGES EXTINGUISHED, SHUTDOWN NORMAL.