As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAKE OFF FROM SJC, THE LEFT MAIN GEAR DID NOT RETRACT. GEAR DISAGREE L CAS MESSAGE. REPLACED WBA-MLG UPLOCK SWITCH IAW CE-680A AMM 32-32-25. PERFORMED MAIN GEAR UPLOCK SWITCH ADJUSTMENT IAW CE-680A AMM 32-32-00. PERFORMED AND FOUND LANDING GEAR OPERATIONAL TEST SATISFACTORY IAW CE-680A AMM 32-00-00.