Reduced Distance de décollage disponible 31 due to a road at the end of piste 31. Special VFR Before proceeding special VFR flight, flight planning to be issued to Air Reporting Office of ST YAN ; this procedure is recommended for other cases. With IFR traffic within the CTR SAINT YAN, meteorological minimums for special VFR (CTR): avions and HEL VIS 3000 m. Special activities AEM NR 9502: 450 ft ASFC SR-SS. Procedures and special instructions piste 31: Décollage mandatory from the end of piste. In case of heavy rain, use the northeast part of piste.