What was found
UPON INSTALLATION OF DE-ICE KIT ONTO PARTIALLY CONNECTED SYSTEM, FIRST TEST OF DE-ICE SYSTEM, TAIL FAILED TO INFLATE. FOUND NEW HOSE TO HAVE SPLIT. REPAIRED SPLIT. AIRCRAFT FLEW ONE HOUR, TAIL BOOTS FAILED TO INFLATE. FOUND 3 HOSES SPLIT FOR TAIL BOOTS. REPAIRED HOSES. UPON NEXT TEST, LT OUTBOARD WING FAILED TO INFLATE. HOSE HAD BROKEN AT BOOT NIPPLE. REPLACED HOSE. NEXT TEST, TAIL FAILED TO INFLATE, FOUND 3 MORE HOSES FAILED, ONE AT HOSE TO BOOT NIPPLE.