As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT, ACFT BEGAN TO SHAKE, IT BEGAN TO SHAKE WORSE AS THE FLIGHT PROGRESSED. FLIGHT LANDED SAFELY AT THE INTENDED AIRPORT. AFTER INSPECTION IT WAS REVEALED ONE OF THE PROPELLER BLADES WAS LOOSE. REMOVED PROPELLER AND SENT TO PROP SHOP FOR OVERHAUL.