AD reserved for radio-equiped avions . Possible use of the paved piste for gliders. Taxiing outside piste and voie de circulation is forbiden. Special activities Glider winching activity (NR 907) reserved for users cleared by CAA - SR - 30 to SS + 30. Maximum ALT of cable : 2000 ft AMSL. Information available on A/A NIERGNIES. AEM (NR 8291): 500 ft ASFC SR-SS. Radio controlled model flying as per protocol.