As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF, THE LANDING GEAR LOCK RELEASE STUCK IN THE DOWN POSITION. REMOVED FROM SERVICE. AFTER INSPECTION OF LANDING GEAR CONTROL PANEL, FOUND THE RED GEAR LOCK RELEASE KNOB, STICKING ON PANEL. ADJUSTED THE RED KNOB. RETURNED TO SERVICE.