As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LG LEVER DISAG RED CAS: ON RETRACTING THE GEAR AFTER TAKEOFF, LG LEVER DISAG DISPLAYED WITH THREE RED DN INDICATIONS. AN UNUSUALLY LOUD RUMBLING SOUND DURING RETRACTION WAS OUR FIRST ALERT THAT SOMETHING WAS ABNORMAL, SUGGESTING THAT THE INBOARD GEAR DOORS OPENED. UPON CYCLING THE GEAR LEVER BACK DOWN THE CAS MESSAGE EXTINGUISHED WITH 3 GREEN GEAR INDICATIONS. CORRECTIVE ACTION: REPLACED LDG CONTROL LEVER. OPS CHECK GOOD. IAW EMB505 AMM 32-31-01