What was found
DURING GEAR RETRACTION THE UNLOCK AND HYD PRESS LIGHTS REMAINED ILLUMINATED. THE FOLLOWING GEAR EXTENSION WAS LOUD AND FAST. ON THE PREVIOUS LANDING DURING GEAR EXTENSION THE GEAR SLAMMED DOWN INTO THE DOWN POSITION. THE EXTENSION SPEED WAS APPROX 170 KNOTS. ON POST FLIGHT NO VISIBLE PROBLEMS WERE NOTED. JACKED ACFT AND PERFORMED 25 GEAR SWINGS WITH NO DEFECTS NOTED. INSPECTED UPLOCKS, GEAR ACTUATOR AND ASSOCIATED WIRING. NO DEFECTS NOTED. PERFORMED RESISTANCE CHECKS ON UPLOCK AND DOWNLOAD SWITCHES WITH NO DEFECTS NOTED. HYD RESERVOIR IS FULL. LANDING GEAR SYS, OPS CHECKS GOOD.