What was found
EMERGENCY LIGHT FAULTS ON CMS PANEL, EMERGENCY LIGHTS DO NOT TURN ON WHEN SELECTED "ON" ON OVERHEAD PANEL. CYCLED AIRCRAFT POWER REF WORK CARD 0543-2002. NO HELP. INTERROGATED OMS W/ EMER LTS OVERHEAD SWITCH IN OFF GOT FAULT CODES 3351F0002, F0004, F0008, F0010, F0012, AND F0012, W/ OH SW IN ON POSITION EMER LTS DO NOT WORK. PERFORMED EPSU OPS TEST REF A220 AMP 33-51-00 FOUND FWD FAP SW CYCLED. NOW OPS GOOD. NO FAULTS ACTIVE IN OFF, ARM OR ON POSITION. (LP# 9110148; AIRCRAFT WAS GROUNDED)