As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MLG LANDING GEAR RETRACTION: AFTER TAKE OFF WHEN WE RETRACTED THE LANDING GEAR WE GOT A LH MAIN GEAR DISAGREE CAS MSG WITH A X IN THE LH MAIN GEAR BOX. WE ALSO GOT AN ASSOCIATED SSD FAIL CAS MSG CORRECTIVE ACTION: REPLACED DOWN LOCK SWITCH. OPS CHECK GOOD. IAW MODEL 680A MM 32-30-15.