What was found
WHILE PERFORMING 'NEW' INSP REQUIREMENT, FND BOTH SQUIB POWER SWITCHES DISLOCATED FROM MAIN ENG FIRE EXTING ANNUNCIATOR/ACTUATOR ASSY. FOUND SQUIB SWITCH MODULE NOT PROPERLY RETAINED BY TABS ON ANNUNCIATOR BODY. THIS CONDITION HAS BEEN FND ON HALF OF INSPECTED ACFT. SUGGEST A CHANGE IN DESIGN OF ASSY FOR POSITIVE ATTACHMENT OF SQUIB POWER SWITCH. NOTE: CONDITION FOUND ON 2 ASSYS WOULD PREVENT FLIGHT CREW FROM BEING ABLE TO DISCHARGE AFFECTED ENG FIRE BOTTLES AT ANY TIME. THERE IS NO WAY FOR CREW TO PRE-FLIGHT SYS TO VERIFY THE FIRE BOTTLE SQUIBS COULD BE BLOWN IF NEEDED.