As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW COULD NOT RETRACT THE LANDING GEAR AFTER TAKEOFF FROM PUB. CONTINUED APPROXIMATELY 70 NM TO DEN. *S/D* ACCOMPLISHED 10 RETRACT-EXTEND GEAR CYCLES AND ONE MANUAL EXTENSION CYCLE. UNABLE TO DUPLICATE PROBLEM. LUBED AIR-GROUND PIVOT MECHANISM ON LT MLG AND CLEANED AIR GROUND SENSORS, OPS CHECK OK.