As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COUPLING FAILED ON GEAR RETRACTION. COUPLING FROM MOTOR TO GEAR BOX CAUSING COUPLING TAB TO SLIDE OUT OF SLOTS CAUSING GEAR TO LOCK HALF-WAY UP, WOULD NOT EXTEND OR RETRACT. USED EMERGENCY PROCEDURE TO EXTEND GEAR. GEAR CIRCUIT BREAKER POPPED. EMERGENCY SPRING WAS BROKEN ON THE JACKSCREW ASSEMBLY, NOT ALLOWING THE JACKSCREW TO DISCONNECT, HAD TO BE MANUALLY LIFTED.