Service difficulty report · Wire · Boeing 7373Y0

Difficulty date
March 25, 2004
Submitted
April 2, 2004
Operation
Air carrier
Aircraft
N334AW
Make and model
Boeing 7373Y0
Aircraft serial
23747
Aircraft time
44,529 hours, 26,087 cycles
Part
Wire
Part number
W9118814
Condition
Arced
Location
Cockpit
Stage of operation
LD
How discovered
O
Nature of condition
B, J, G
Precautionary procedure
O

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

What was found

ON TOUCHDOWN ARCING & SMOKE AT P6 C/B PANEL BEHIND F/O, NUMEROUS C/B'S POPPED. MX FOUND WIRE BUNDLES ARCED BEHIND P-6 (3) C/B PANEL. FOUND A SCREW SECURING GUSSET (BOTTOM OF P6 (3) PANEL) BS 254, RBL 21 CHAFED THROUGH BUNDLE, CLOSE PROXIMITY OF HARNESSES ARCING SPREAD FROM ONE BUNDLE TO OTHER. MX REPLACED 67 WIRES C/B'S ON P6 (2) & P6 (3) C/B PANELS TO VARIOUS CONNECTORS & RELAYS. REPLACED 7 C/B ON P6 (3) PANEL & GUSSET BEHIND P-6 (3) BS 254, RBL 21, ARCING DAMAGE. SYS AFFECTED BY DAMAGE: FLT CONTROL SHUTOFF VALVE, AUTO FLT CONTROL, ELECT HYD PUMP, AUDIO 1 & 2, (ENG 1 & 2 FIRE PROTECTION, SYNC-LOCK, IGNITION, IDLE CONTROL EGT, T/R CONTROL), FUEL QTY, COCKPIT LIGHTING & STAB TRIM ACTUATOR.

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