The Hazards of Differential Reverse for Directional Control
 

I can't say that I have ever seen differential reverse used but have seen it briefed as an option. I guess the lesson learned is that you better make sure you use the proper lever. Apparently, it is approved for the aircraft type......

ASN Aircraft accident Viking Air DHC-6 Twin Otter 400 B-55571 Orchid Island Airport (KYD) (aviation-safety.net)

https://t.co/vz3bfKlunA https://t.co/Nqw7Yl8H3X" / Twitter

Prop pitch controls aren't always rigged perfectly. In fact I find it's better to get into reverse gently rather than slamming them all the way to full reverse. Particularly if you fly a fleet of airplanes. With that said, I find fine steering with differential beta or reverse on runways or taxiways mighty convenient in a twin turboprop like a King Air. Not really necessary per se, but convenient. But if you're pulling a whole bunch more reverse on one side than the other, I could see it leading to control problems!