As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH WHEN GEAR EXTENDED, LT MAIN GREEN FAILED TO LIGHT. EMERGENCY GEAR EXTENSION USED TO LOCK GEAR DOWN. INSPECTION REVEALED INTERIOR OF DOWNLOCK SHELL LT SIDE PEELED BACK AND FOLDED OVER PREVENTING FULL TRAVEL OF LEG AND STOPPING OVER CENTER LOCK FROM ENGAGING. SUSPECT CAUSE IS RUBBER COMPOSITE INSERT IS OLD AND BRITTLE CAUSING DELAMINATION. THIS IS SECOND CESSNA 210 SERIES WITH IDENTICAL PROBLEM IN 1 MONTH.