The ladders have retractable hinges, each with a welded 'top hat' that can separate from the hinge.
If the hinges separate from the ladder while in use, the ladder may fall from the vehicle, increasing the risk of injury.
What to do
Keystone will notify owners, and dealers will install a hinge brace over the back of the existing hinges, free of charge. The recall were expected to begin in November 2016.
Owners may contact Keystone customer service at 1-866-425-4369. Keystone's number for this recall is 16-267.