What was found
RED LIGHT IN MLG HANDLE STAYS ON AFTER GEAR RETRACTION. JACKED ACFT & INSTALLED HYD MULE. CHECKED MLG UPLOCK ASSY'S & ADJUSTED RT MLG UPLOCK IAW MM 32-30-00. ACCOMPLISHED GEAR SWINGS WHILE SLOWLY REDUCING HYD PRESSURE. AT 1200 PSI RED HANDLE MLG LIGHT STAYED ON & BOTH MLG DOORS REMAINED OPEN. WITH HYD PRESSURE STILL APPLIED BOTH MLG REMAINED RETRACTED WITH MLG DOORS OPEN. PULLED ON NLG DOORS & NLG EXTENDED. CHECKED RIGGING OF NLG UPLOCK ASSY & ADJUSTED PER MM 32-30-00. POWERED UP HYD SYS & ACCOMPLISHED MLG FUNCTIONAL TEST PER MM 32-00-00. POWERED UP HYD SYS & ACCOMPLISHED MLG FUNCTIONAL TEST PER MM 32-00-00 NO DEFECTS NOTED. REMOVED ACFT FROM JACKS & REMOVED HYD MULE. CHECKED SERVICE OF HYD RESERVOIR, NO DEFECTS NOTED.