What was found
DURING THE TAKEOFF ROLL , THE AIRCRAFT EXPERIENCED A SUDDEN, UN-COMMANDED 10 DEGREE LEFT ROLLING MOMENT ACCOMPANIED BY A LOUD MECHANICAL CLUNK AND BRIEF VIBRATION SHUDDER. EMERGENCY WAS DECLARED AND RETURNED TO DEPARTURE AIRPORT. LANDING WAS UNEVENTFUL. MAINTENANCE REPLACED THE RIGHT MAIN LANDING GEAR ASSEMBLY DUE TO SUSPECT STRUT EXTENDED LATE AFTER TAKE AND DURING GEAR RETRACTION. GEAR SWINGS WERE PERFORMED WITH NO DEFECTS NOTED. ENGINE RUNS WERE ALSO PERFORMED WITH NO DEFECTS NOTED. A SUCCESSFUL OPERATIONAL CHECK FLIGHT WAS PERFORMED. AIRCRAFT WAS RETURNED TO SERVICE.