As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN EMERG LIGHT: CABIN EMERGENCY LIGHTING WAS OBSERVED TO BE BLINKING ON AND OFF DURING FLIGHT WITH THE EMER LIGHT IN THE ARMED POSITION. TROUBLESHOT DISCREPANCY TO A BAD PILOT CONTROL EMERGENCY LIGHT RELAY. REMOVED RELAY PN M83536/15-022L NSN AND INSTALLED NEW CUSTOMER SUPPLIED RELAY PN M83536/15-022L NSN AS REQUIRED, CHARGED INSTALLED EMRGENCY BATTERY PACKS. OPS CHECK GOOD WITH NO FURTHER DEFECTS NOTED. REF CE680 MM 33-50-10.