As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OBSERVED ALL EMER LIGHTS INTERMITTENTLY FLICKERING. OBSERVED ALL EMER LIGHTS REMAINING ON FOR 20+ MINUTES WHEN SWITCH IN ARM POSITION. POWERED THE PLANE AND CHARGED THE EMERGENCY LIGHTS AND OPS CHECKED THE EMERGENCY LIGHTS IAW EMB-505 AMM 33-52-01. OPS CHECK GOOD, NOTED NO DISCREPANCIES WITH THE SYSTEM. DISCONNECTED AND RECONNECTED BOTH EMERGENCY BATTERIES IAW EMB-505 AMM 33-52-01/400. / NO DEFECTS NOTED.