What was found
LANDING GEAR FAILED TO RETRACT AFTER TAKE-OFF FOUND MAIN GEAR ACCESS PANEL DOOR NOT FULLY CLOSED MADE OVERWEIGHT LANDING 165.0LBSNO HARD LANDING. GROUNDED - YES. AIR TURNBACK - ACCOMPLISHED GENERAL VISUAL INSPECTION OF ALL 3 GEARS NO DEFECTS NOTED. ACCOMPLISHED FIM 32-30-815 GEAR COMMANDED UP FAULT ISOLATION OPS CHECK GOOD NO DEFECTS NOTED. OPENED MANUAL EXTENSION SYSTEM ACCESS DOOR PER MXT MANUAL 32-34-00 DOOR REMAINS CLOSED NO DEFECTS NOTED.