As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKE-OFF LDG GEAR WOULD NOT RETRACT. IN-TRANSIT AND DOWN-AND-LOCKED LIGHT REMAINED ILLUMINATED, DIVERTED TO CYYZ FOR MAINTENANCE. MAINTENANCE PERFORMED SEVERAL GEAR SWINGS AND COULD NOT DUPLICATE PROBLEM. RANG OUT LT AND RT MAIN GEAR DOOR SWITCHES AND FOUND PIN 10 ON CONNECTOR S97 PUSHED BACK INTO BACKSHELL. RESEATED PIN. FUNCTION CHECK NORMAL.