As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN APPLYING GROUND POWER TO A/C NOTICED FE PANEL INSTRUMENTS FLUCTUATING AND CIRCUIT BREAKERS POPPING. SHUT DOWN GROUND POWER AND UPON INSPECTION FOUND WIRE BUNDLES AFT OF 1183 PRESSURE BULKHEAD BURNED. BUNDLES AFFECTED WERE W-082, W-342, W-350, W-152, W-558, W-843 AND W-358. REPLACED AFFECTED WIRES AND PERFORMED OPERATIONAL CHECKS ON ALL SYSTEMS. OPS CHECKED OK PER MM. SUSPECT WIRE CHAFFING IN BUNDLE W-082. (M)