What was found
SLIDE LIGHTS ARE BLOWN. RESISTANCE TEST DOES NOT PASS. RESERVOIR VALVE ASSEMBLY FRAYED. SUPPLEMENTAL DATA UPDATE SHOP FINDINGS REVEALED THAT ELECTRICAL HARNESS AND LAMPS WERE FOUND DAMAGED HENCE THE TEST OF THE UNIT WHILE INSTALLED ON THE AIRCRAFT FAILED. BUSTED BULBS ARE PERHAPS ATTRIBUTED TO AGE, WHILE HARNESS AND VALVE FRAYING ARE ATTRIBUTED TO IN-SERVICE ENVIRONMENTAL CAUSES SUCH AS VIBRATION. REPLACED ELECTRICAL HARNESS, LAMPS, AND ALSO THE RESERVOIR VALVE ASSEMBLY.