As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS FLICKERED ON CLIMBOUT WITH NR 2 PROPELLER A PHASE. REMOVED FWD UPPER COWL PANEL ON NR 2 ENGINE. INSPECTED BRUSH BLOCK ASSY SLIP RINGS AND HEATER LEADS. NO FAULTS FOUND, REINSTALLED PANEL. REMOVED FORWARD UPPER COWL AND NR 1 ENGINE ENGINE AND INSPECT SAME R & R NR1 BRUSH BLOCK ASSY.