Stalls in the circuit generally have two common factors: they are caused by loss of command over the aeroplane, and they are rarely recoverable. This video steps us through why they occur and what pilots can do to safeguard against them happening. It is a very salient point that we practice stalls with plenty of warning at a very safe altitude, but when a stall visits in real life it is generally unannounced and close to the ground. Thanks to AOPA USA's Air Safety Institute for producing this one.