Ah, yes the 40 ton dog whistle. Will never forget the ground school, one day just on the prop, high locks, low locks, blue lights, red lights and amber lights. Nightmare of a thing. I never flew the 50 but a close friend lost two engines on descent due to icing, managed to get both back but even today still has a slight stutter! Built like a concrete outhouse and if I remember correctly MMS and MMO had over 50,000 cycles. Then the checkies on it, 'the gang of four' including 'the white haired assassin', happy days.