Service difficulty report · Wire · Boeing 777222

Difficulty date
January 17, 2013
Submitted
February 14, 2013
Operation
Air carrier
Aircraft
N771UA
Make and model
Boeing 777222
Aircraft serial
26932
Aircraft time
69,403 hours, 12,516 cycles
Engine
Pwa PW4077
Part
Wire
Part number
8460100118
Condition
Shorted
Location
Spar Valve
Stage of operation
IN
How discovered
9
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

FUEL SPAR VALVE RT STATUS MESSAGE. TROUBLESHOT IAW WDM 28-22-25 AND FOUND RELAY K28222 ON P101 DIST INTEGRATION PANEL WORKING NORMAL. INSPECTED WIRING IAW WDM 28 -22-25 AND FOUND GROUND BETWEEN PIN 34 OF CONNECTOR D1304P ON P101 DISTRIBUTION PANEL AP0461 AND PIN 5 CONNECTOR DV28264. ACCOMPLISHED FURTHER TROUBLESHOOTING & FOUND WIRE 8460-1001-18 BETWEEN RT WING-STRUT DISCONNECT CONNECTOR D7274P PIN4 & R ENG FUEL SPAR VALVE CONNECTOR DV28264 PIN5 SHORTED TO GROUND & SHIELD. IAW WD 28-22-25 PG 4A. 129600 REMOVED DAMAGED WIRE, INSTALLED NEW WIRE & SHEILD TERMINATION. ACCOMPLISHED SPAR VALVE OPS CHECKS. ALL OPS & INDICATIONS NORMAL.