411A, Hi
"Of course, prior to civvy service, the UKCAA required a stick pusher to be fitted.
In the interim, ops were allowed with an additional crew member.
His job was to closely monitor the airspeed, and if deemed too slow, was to yell out...STALL, STALL!!!
I think it was actually "SPEED, SPEED" if the speed fell below VAT!
I did the actual stick-push air-tests with Douggie Page, then Marshalls' Chief Test Pilot. When we tried the 45Flap, U/C down and 350psi of torque on the engines, the stick-push didn't work and we stalled.....
Fortunately at 5000ft because we flicked inverted and where the sky should be there were green fields...and that wasn't an experience you'd like to try in any big aeroplane!!!
We upped our base height to 10,000ft after that!