As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AN INTERNAL LEAK ON THE LANDING GEAR SELECTOR CAUSED THE FLUID TO CIRCULATE IN THE LANDING GEAR SYSTEM WHICH DOES NOT ALLOW SUFFICANT PRESSURE TO BUILD IN THE SYSTEM TO HOLD THE LANDING GEAR IN THE UP POSITION. THE LANDING GEAR SLOWLY CREPT DOWN IN FLIGHT ALERTING THE CREW AT WHICH POINT THEY RETURN TO KPDK WITH AN UNEVENTFUL LANDING.