As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR WOULD NOT EXTEND, ATTEMPTED SECOND TIME AFTER SEVERAL MINUTES LEFT AND RIGHT MAINS EXTENDED. THEN AFTER 30 OR SO SECONDS NOSE CAME DOWN. TROUBLESHOT PROBLEM TO LANDING GEAR CONTROLLER. INSTALLED REPAIRED LANDING GEAR CONTROLLER. PERFORMED TIMED EXTEND RETRACT TEST. CHECKED GOOD. PERFORMED LOGIC MODULE CIRCUIT TEST. CHECKED GOOD. PERFORMED LANDING GEAR ADJUSTMENT TEST CHECKED GOOD WORK DONE IAW CHAP 32-46-00 OF THE CE650 MM.