What was found
DURING B INSPECTION FOUND THE NR 1 RT EMERGENCY LIGHT EXTRUSION IS CRACKED, & NR 4 RT EMERGENCY LIGHT EXTRUSION IS CRACKED, & NR 5 RT EMERGENCY LIGHT EXTRUSION IS CRACKED & NR 6 RT EMERGENCY LIGHT EXTRUSION IS CRACKED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE DURING B INSPECTION FOUND THE NR 1 RT EMERGENCY LIGHT EXTRUSION IS CRACKED, & NR 4 RT EMERGENCY LIGHT EXTRUSION IS CRACKED, & NR 5 RT EMERGENCY LIGHT EXTRUSION IS CRACKED & NR 6 RT EMERGENCY LIGHT EXTRUSION IS CRACKED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE 1, 4, 5 & 6 RT EMERGENCY LIGHT EXTRUSION IAW AMM 33-50-12. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE. EMERGENCY LIGHT EXTRUSION IAW AMM 33-50-12. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.