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Why such high minima with 1500 feet / 8 km ? The international standards of construction of air traffic procedures led to the following minima applicable to the procedure VOR/DME MVI RWY 22 (L or R) called "SALEYA 22 (L or R)":
Taking into account the geographical environment of the airfield, and in particular the proximity of Mont Boron or Mont Alban, simulator tests of A320 and B 747 flights were carried out at the Air France training centre in Vilgénis, with input from air transport professionals (airline companies, pilots, controllers, SFACT, DNA, OCV). Following these simulations, experts estimated the minima above were not enough to carry out the procedure safely. Higher operational minima were thus adopted. They are currently in force: Simulations also resulted in imposing technical conditions on the use of the Saleya procedure. If these conditions are not met, the Saleya procedure cannot be declared in use:
- VOR and DME AZR (of course), - Flashing lights from the runway in use, - PAPI on the runway in use. At night, the following additional equipment must be in function: - Mont Boron obstruction lights, - Mont Alban obstruction lights. In addition, danger lights were also installed on Mont Boron and Mont Alban. Their absence of operation results in recording the minimum night time visibility to 10 km (note obstruction lights are compulsory). In addition, the Saleya procedure is not used at night when Mont Boron and Mont Alban are obscured by clouds.
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