What was found
ON TAKEOFF, GEAR OVERRIDE WAS USED TO RETRACT LT GEAR PER CHECKLIST. ON EXTENSION, DOWN AND LOCK IND NORMAL, INTERMITTENT WARNING HORN SOUNDED UNTIL FLAPS RETRACTED TO 22 DEGREES, THEN HORN SILENCED. SUSPECT NOSE STRUT NOT EXTENDING FULLY, RESULTING IN GROUND SENSING STILL HOLDING LATCH. DISASSEMBLED PER 32-21-03, SERVICED AND LEAK CHECKED OK.