The 222UT has a totally DC electrical system wheras the A/B have AC and DC systems, makes the UT a much simpler system.
UTs have more fuel load, bigger wing tanks due to no landing gear in there.
The 430 is a stretched 222, has a plug of about 18 inches, not a great deal has changed in the airframe department, mainly electrics and avionics.
430 has IIDS and EFIS and autopilot as standard so lots of telly screens to look at, but there are 3x 430s that came out with standard flight instruments, no autopilot in these ones only scas and basic attitude hold.
(autopilot interfaces with the EFIS).
222 seats pilot and 9 Pax, 430 seats the same but with a tiny bit more room or there is an option for 10 pax config on the 430.
The 222 flies very much like a big longranger but the 430 is something totally different, No vibration at all from take off and even through translation amazingly smooth (due to the LIVE mounts on the transmission). Feels more like a jet than a helicopter.
Hope that helps a bit Helmet fire.
