At some flight schools there are normal to teach " the impossible turn"  during the emergencies in the circuit. This manouver  consist in 180 turn between 30-45 degrees  of bank angle when you have an engine failure above safety altitude (usually 500ft AGL)A as a result to land in the opposite runway with  an extra danger of differents factors involve the manouver it self such a inexperience, increase the Vs with bank angle, nominal wind, terrain obstacles...)