What was found
EMERGENCY EXIT LIGHTS INOP ON RIGHT SIDE OF AIRCRAFT FROM AFT OVERWING EXIT BACK. EMERGENCY EXIT LIGHTS ARE INTERMITTENT ON LEFT SIDE OF AIRCRAFT. GROUNDED - YES. FOUND 6 EACH OF R/H AFT EMERGENCY EXIT AISLE LIGHTS, R2 OVERHEAD DOOR EMERGENCY EXIT LIGHT, EXTERIOR R/H WING GROUND ILLUMINATION LIGHT, AND EXTERIOR R/2 DOOR SLIDE EMERGENCY LIGHT INOP. REMOVED AND REPLACED 2 EACH EMERGENCY LIGHT BATTERIES FOR COINCIDING LIGHTS REF B737-800 AMM 33-51-06. RELAMPED BOTH EXTERIOR LIGHTS REF AMM 33-51-04. PERFORMED OPERATIONAL TEST REF AMM 33-51-00.