piotrz,
I have not completed the transatlantic but have operated one of the longer legs on that route between Scotland and Reykjavik on a few occasions and also spent time while doing so with many ferry pilots swpping war stories over a pint. My aircraft at the time was a Reims 406 turboprob on high altitude survey ops, this aircraft also uses a variation of the PT6 engine. Having a PT6 either side is a very comforting fact and seeing those ITT's and temps welded to the spot fills you with confidence in one of the greatest aero engines ever built. P+W....dependable engines! Fuzzy warm feelings aside your route will prob take you from the states to Goose bay Canada, Narsarsuaq Greenland, Reykjavic Iceland then to the UK. If you're flying with an experienced ferry pilot he will give you the full brief and it will be an experience of a lifetime as this is a serious trip and the consequences of any mistake are severe! Needless to say weather analysis is critical, PNR and PETs need to be super accurate to take into account possible changes in altitude for icing avoidance, which, again can be some of the most severe anywhere on the planet given the correct met conditions, I have never experienced anything like it short of rain ice! Often the 0 deg isotherm can sit well below sea level and despite what may seem logical the best course of action to escape severe icing is climbing....That again must be evaluated and calculated. Winds are a MAJOR factor and, like the rest of the weather at those lattitudes, is subject to abrupt change with no notice or forecast. Winter is a more difficult crossing. Sounds scary doesn't it! It's not,
IF, planned to perfection which requires in depth knowledge of weather systems, terrain, safety and aircraft. Safety equipment is paramount and dry suits should be worn as a matter of course. I'm sure the companies contract pilot will be very experienced but don't 'guess'....check up, satifsy yourself, listen, learn and you will experience the trip of a life time with the threat of the most extreme conditions....SAFELY! It will make you an infinately better pilot. Go for it, good luck
