As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) JUST AFTER TAKE-OFF THE CAPTAIN OBSERVED A RIGHT-HAND GEAR INDICATION ILLUMINATED GREEN AFTER LANDING GEAR RETRACTION. ATB PERFORMED - R/H MLG GREEN ANNUNCIATOR REMAINING ON FOLLOWING GEAR UP SELECTION. ALTERNATE INDICATIONS NORMAL. MAINTENANCE WAS ABLE TO REPLICATE FAULT. LGCIP REPLACED AND DEFECT CLEARED. (TC# 20190819013)