Considerando un avvicinamento di non precisione le EU-OPS definiscono "Visual Reference" quanto segue:
6. Visual reference.
A pilot may not continue an approach below MDA/MDH unless at least one of the following visual references for the intended runway is distinctly visible and identifiable to the pilot:
(i) elements of the approach light system;
(ii) the threshold;
(iii) the threshold markings;
(iv) the threshold lights;
(v) the threshold identification lights;
(vi) the visual glide slope indicator;
(vii) the touchdown zone or touchdown zone markings;
(viii) the touchdown zone lights;
(ix) runway edge lights; or
(x) other visual references accepted by the Authority.
Essendo chiaramente visibile l'ALS la pista è considerata in vista.