As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE SPOOL VALVE IN THE LANDING GEAR POWER PACK MANIFOLD VALVE ASSEMBLY WAS FOUND STUCK IN THE GEAR UP MODE. PULLED SOLENOID OUT, DEPRESSED THE SPOOL VALVE COUPLE OF TIMES, AND IT SPRUNG BACK INTO THE GEAR DOWN MODE. THEN GEAR WAS HAND PUMPED DOWN AND LOCKED. REASON FOR VALVE TO STICK IN GEAR UP MODE IS UNKNOWN AT THIS DATE.