Originally Posted by Hueypilot

The WC-130Hs started out as E-models and were modified into HC-130Hs before being further modified into WC-130Hs.

They are basically Super Es. They have many of the sub-systems of the E (GTC/ATM, etc), but have the -15 engines of the H.

The only thing we know here is they departed controlled flight. What precipitated that is unknown at this time. There's rumor out there they were having some kind of propulsion problem, which would make sense given the yaw in the video. However, a large range of problems could have caused that...everything from mechanical problems to improper pilot inputs during a mechanical failure. It could've been a combination of a VMCA roll and a stall. Time will tell. No sense in getting too invested in any particular theory.

Until the AIB/SIB is released, just pray for the families left behind.