The reference device was returned to the service center for a physical evaluation.
A visual inspection was performed on the returned device and found the bending section skeleton tab was protruding (sticking out) from the bending section cover near the insertion tube area.
The bending section cover was removed and the bending section skeleton was fully broken and separated with no signs of any sharp edges.
The protruding skeleton tab was bent.
The instruction manual states the following; ¿do not twist or bend the bending section with your hands¿.
Additionally, the instructions for safe use manual indicate that, damage to the bending section would happen if excessive force was applied while angulating in the opposite direction if there was no movement from the bending section; this would occur more so in a narrow environment.
This is a newer type ns unit (post counter measure) that was verified by the positioning of the bending section tab.
The scope had a 28f (overhaul) on 6/25/2019 from the previous repair.
Based on the evaluation, the cause of the broken bending section skeleton and bent skeleton tab is due to excessive force and/or stress attributed to mishandling.
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