As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, UNABLE TO RAISE LANDING GEAR HANDLE AND RETRACT LANDING GEAR. RETURNED TO DTW AND LANDED UNEVENTFULLY. FOUND NOSE GEAR STRUT CENTERING CAM 90 DEGREES OUT OF POSITION. REALIGNED CENTERING CAM AND REASSEMBLED NOSE GEAR STRUT. SERVICED NOSE GEAR STRUT AND ACCOMPLISHED FUNCTIONAL CHECKS PER AMM. AIRCRAFT RETURNED TO SERVICE.