Hi,
I flew the Let410 for 7 years its a fantastic machine for african conditions. Very reliable never breaks down. Operators do take advantage of this to the extreeme at times so when they do finally break it aint pretty. The only official trainning on the type is at LET's fly in Ostrava Czech Republic they have the sim and you'll do your circuits there as well here's the link
Flight Training Centre Ostrava -.
Most of the let410's ive flown have been different in one way or another. They were designed in the early 60's and they first came out with the LET410A model ironically this had PT6 engines on it and no wing tip tanks. Then the LET410UVP came out this had Walter engines on it called the M601 a very crude engine at the best of times the IELU ( Intergrated Electronic Limiting Unit ) hadn't been fully developed on it you had to treat these engines quite carefully also in my experience on the type very prone to hot starts. I'd like to add this type was purely for the russian military though a few cheapies where sold to dodgy african operators in Sudan and congo who i was unfortunate enough to come across in my african flying career.
Then Came the LET410UVP-E models that included the E9 and E20 models the most popular models these had increased range with the wing tip fuel tanks which gave you an endurance of approximately 5hrs 30 mins and extra hour of fuel per side 150KG per tip tank if i do recall correctly. The engines were much improved the UVP-E model let410 has the walter M601E engines it has 5 bladed props the IELU works properly its a robust engine reliable engine provided its well maintained also at contingency power you have 798HP as apposed to 750HP on the older M601.
The LET420 was developed to be used in the USA in order to gain FAA certification under FAR25 the FAA recommended more powerful engines and a few other airframe modifications which I don't recall at this time so this aircraft came out with more powerful engines again Walter but now they are the Walter M601F engines which has an extra stage of axial flow compressor a few more horse power and it was enough to gain FAA certification I haven't flown this model though the last let410UVP-E20's I flew were fitted with the M601F engines which were a further improvement a bit better performance from my experience flying this type of engine. Avionics wise on the later model LET410-E9/E20 and L420 its all Bendex King. Apparently they have an fully decked out EFIS LET410 in Czech Republic I havent seen it.
Just another bit of useless information Walter got bought out by GE so there will be a further improvement to this Walter Engine.
Flying wise the Let is a fantastic machine I loved my time on the LET410 I hope you enjoy your time on it too.
Hope my information helps,
Happy Landings!!!
Pete