Factual error: It is roughly 120-135 dB inside of a C-130, especially one that hasn't been specifically modified. It is so loud that it is painful to be in the cargo hold without hearing protection (besides it being outside of military regulations) and you certainly couldn't have a normal conversation while it was in flight.
Factual error: Set is not the god of death, he is the god of chaos, Anubis is the god of death.
Factual error: Jenny dates the sarcophagus as 5000 years old and explains later that the hieroglyphs are from the New Kingdom which dates from 1550 to 1070 BC - just around 3000 to 3500 years before.
Factual error: The two protagonists are first said to be 100 miles away from their presumed location. When Greenway exits the helicopter, he notes they should've been 100 clicks (km) removed from their current location. These measurements are very different and therefore the dialogue is factually inaccurate (100 km vs 160 km). (00:09:11 - 00:13:23)
Factual error: As the plane is crashing, it is shown in a nose dive, but the actors are shown rolling around in it like a barrel. Everyone should have been piled up against the cockpit bulkhead.