As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON DEPARTURE AND GEAR RETRACTION THE GEAR UNSAFE LIGHT ILLUMINATED ON AND HYD PRESS LIGHT ILLUMINATED. WITH ACCELERATION NOISE INCREASED ABNORMALLY, AS IF ONE OR MORE GEAR REMAINED DOWN. REMOVED LT MAIN GEAR ACTUATOR & INSTALLED A RENTAL ACTUATOR THAT WAS INSPECTED BY CESSNA AIRCRAFT COMPANY CRS CNQR18C IAW 560 M.M. CHAP. 32-31-04.