Issue: SAFETY ConcernProblem: Toyota Forklift (Model 8FBCU25) Carriage(holding the forks) detaches itself from forklift Mast.Incident summary: Operator was attempting to stack one container on top of another. At approximately 1 meter from floor “carriage” with load unlatched and fell from forklift, dropping load and forks to floor. (see picture) Note: this could happen at any height.Initial Root Cause: Bushings wear over short time and bolts loosen.This is second occurrence within 12 months. September 2020 and October 2019