As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILST CARRYING OUT FIRE BOTTLE CIRCUIT INTEGRITY OPERATIONAL CHECKS, RT FIRE EXTINGUISHER BOTTLE BLUE NR 1 SHOT. CONNECTOR 053E2P1 WIRE 2W106A20N-4 FOUND TO BE CHAFED, AND WIRE 2W102H20-4 FOUND TO BE SEVERELY CHAFED THROUGH OUTER INSULATION, BRAID AND INNER INSULATION THROUGH TO CONDUCTOR. WIRE TO BE REPLACED.