Although the procedure to land on R05 is complex (a 120 degree low level right turn heading straight for a 7000′ rock) it is the sever wind shears that exist when the wind comes over the top of the mountain and down the valleys at either end of the runway that make it so scary. A mate of mine did a go around there a few years ago in an A320 from over 100′ due to windshear and still struck the ground in the manoeuvre. Fortunately they hadn’t been displaced too much laterally by gusts so they contacted the runway rather than anything more serious. In Funchal adrenaline is often brown coloured!