What was found
THE AFT ATTACH POINTS OF THIS HORIZONTAL STABILIZER ARE STRUCTURALLY REINFORCED WITH AN INTERNAL REINFORCEMENT TRIANGLE BRACKET, PN 0732106 AND 0732106-1. CRACKS IN THESE REINFORCEMENTS WERE FOUND AROUND THE WASHERS OF THE ATTACH HARDWARE, AND IN THE RADIUS OF THE ANGLE. IDENTIFICATION OF THIS PROBLEM CAN BE ACCOMPLISHED BY OBSERVING EXCESSIVE FORE AND AFT MOVEMENT OF THE HORIZONTAL STABILIZER WHILE OBSERVING THE REAR ATTACH FITTING. IF THE FITTING SHOWS SIGNS OF GAP BETWEEN THE SKIN AND FITTING WHILE TESTING THE MOVEMENT FORE AND AFT, THIS IS PROBABLE CAUSE FOR FURTHER INVESTIGATION OF THE INTERNAL REINFORCEMENT TRIANGLE BRACKETS. THIS AREA IS MOST EASILY INSPECTED BY REMOVING THE ELEVATORS AND USING ADEQU