As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE INSTALLED ON AIRCRAFT AFTER RETURN FROM REPAIR FACILITY. DURING INITIAL GROUND RUN OF ENGINE THE POWER LEVER SEIZED AND VERY HARD TO MOVE. ENGINE TEMPERATURE AND PRESSURE WERE NORMAL. FEATHERED THE PROPELLER AND SHUTDOWN ENGINE. POST INSPECTION SHOWED NO LEAKS WITH THE PROPELLER VERY HARD TO TURN AND BETA REVERSING LEVER SEIZED. (K)