The Jetstream - what an awful POS that thing was! Poor control harmony, absurdly complicated engines, every conceivable way of generating electricity short of the Wimshurst Machine, unreliable autopilot - and they 'taught' you to try to fly the b*stard thing as a one man band rather than as a multi-crew aeroplane....
Nosewheel steering was absurdly heavy and imprecise; differential power and brakes worked fine, but 'they' wouldn't allow you to do use that!
Definitely the worst aircraft bearing a roundel that I ever flew. I'm sure it was invented to make ME flying seem difficult!