What was found
FLT 165, RIGHT MAIN GEAR DOOR DID NOT RETRACT AFTER GEAR EXTENDED. ABNORMAL PROCEDURE ACCOMPLISHED. CLEANED AND RESECURED RT MLG INBD DOOR UPLOCK SWITCHES, OPERATED GEAR DOORS. NO DEFECTS NOTED, REF M/M 32-30-00. OPS NORMAL AT THIS TIME. ACFT GROUNDED.