What was found
HYDRAULIC HOSE KIT ORDERED FROM LAKE FACTORY INSTALLED ON AIRCRAFT. TWO OUT OF SIX LANDING GEAR RETRACT HOSES LEAKED AT THE FITTINGS. UPON DISASSEMBLY OF HOSES, FOUND THE ENDS WERE IMPROPERLY INSTALLED. THE FERRULES WERE SCREWED ONTO THE HOSE ONLY ONE THREAD, SHOULD BE THREE THREADS. THE INSIDE PART OF THE FITTING WAS APPARENTLY INSTALLED WITHOUT THE PROPER TOOL CAUSING IT TO CUT THE INSIDE OF THE HOSE. HOSE IS AEROQUIP 303-4. FITTINGS ARE MS24590-4.