Kiltie---
I would also not agree that these aircraft are not suitable for charter operations. They have proven over the years to be very reliable however, at MTOW they have very limited performance with an engine inop. The 404 has a large cabin with 11 seats but it is not always a good idea to fill them all. On the other hand, this same fuselage, when pressurised and fitted with Garret engines becomes a CE441, and this type DOES have good performance. My favorite machine, bar none.
With regard to run-up while taxiing, an incident I personally saw last week in which a CE414 tried this and ended up in the dirt with the left gear collapsed shows that it is, at best, ill advised.