My uninformed (as usual) guess would be that going back to flat pitch at 50 KIAS or so would reduce the risk of damage and still take advantage of beta.

I flew OV-10s with twin turboprops for three years. We often used beta until stopped, and I don't remember a problem, but if I were paying for prop repairs I'd be more cautious.

> To: lml@lancaironline.net
> Date: Thu, 1 Jan 2009 11:40:02 -0500
> From: liegner@embarqmail.com
> Subject: [LML] Re: reversing MT
>
> I don't know much about this, but I had considered the topic years
> ago. The composite MT prop (even with the nickle leading edge) takes
> a beating and gets pitted easily. Making this a reversing prop (that
> is, going into Beta) invites heavy ingestion of rocks and debris
> sucked back up into the prop after it passes over them. It has been
> my understanding that these beta props (sometimes found on
> turboprops) get heavy damage and need constant repair/maintenance
> from the beta feature.
>
> Jeff L
> LIVP
>
> >Lancair says they have sold a couple of reversing MT props to Legacies. I'm
> >thinking about installing one on a IVP and would appreciate any comments.
> >Thanks
>
>
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