As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT FROM SGF. THE RIGHT MLG AND NLG WOULD NOT RETRACT, PNEUMATIC PRESSURE HAD DROPPED TO 400 PSI. THE CREW ELCETED TO RETURN TO SGF. WHEN THE CREW SELECTED GEAR DOWN THE PRESSURE BEGAN TO INCREASE AND WAS AT 1000 PSI AT SHUT DOWN.