5 APUs in close formation
Surely: four oil leaks connected by an electrical problem.
Either way, a fine aircraft. Only rapid development left its technology too rapidly outdated. It's redundancy, practicality, performance, and passenger appeal, made it a winner in its own field.
It's easy to be critical of the 146 for having too wide an envelope, being too easy to pole around the sky, allowing abrupt, steep, approaches, which don't meet the stabilised criteria. Another view is that it's the final pilot's aeroplane, enabling the trained aircrew to manoeuvre at their will to meet demands, while their A and B colleagues have to deal with such narrow margins that automation becomes the only means of achieving reliable results.
I hadn't had that thought before, but now I have, I'm feeling quietly refreshed.