Re: Deep Stall?
Actually, tiger26isfinals, the wikipedia is fairly limited.
The prototype BAC1-11 had tab activated ailerons and elevators, so it not only had no elevator authority in deep stall, but no roll capacity either. Incidentally, the test crew (who knew their tenure on the planet was limited) continued a commentary on their attempts to recover all the way down. The ultimate professionals!
The solution for the production aircraft included not only powered controls, but modified wingtips and wing roots to alter airflow, much more efficient stall warning vanes, stick push and fuel dip. In theory, in the model 217 anyway, one could power out of a deep stall if all other measures failed to stop you reaching that condition.
I never tried!!!
Cheers
Gru