It is probably not an OTSR, but a lap bar like that was installed on both Flight of Fear coasters. The lap bar was designed for Son of Beast by Premier, and then for this past year, they adapted the lap bar to the Premier designed Flight of Fear. To see a picture of this lap bar, take a look at the latest feature of a year in review! Hope I helped.
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www.geocities.com/coastersrz I`ve ridden Son of Beast 62 times!