As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MANUAL GEAR EXTENSION DOOR WILL NOT FULLY OPEN. CLEANED AND LUBRICATED EXPOSED SURFACE OF THE SELECTOR VALVE. OPS CHECKS GOOD. NOTE THE OAT WHEN THIS HAPPED WAS 6 DEGREES FAHRENHEIT, SO COULD ALSO BE COLD RELATED SINCE THE AIRCRAFT WAS MOVED INTO A HEATED HANGAR FOR TROUBLESHOOTING.