6.1.  The operator of a heavy unmanned free balloon operating at or below 18000 m (60000 ft) pressure-altitude shall monitor the flight path of the balloon and forward reports of the balloon’s position as requested by air traffic services. Unless air traffic services require reports of the balloon’s position at more frequent intervals, the operator shall record the position every 2 hours.

6.2.  The operator of a heavy unmanned free balloon operating above 18000 m (60000 ft) pressure-altitude shall monitor the flight progress of the balloon and forward reports of the balloon’s position as requested by air traffic services. Unless air traffic services require reports of the balloon’s position at more frequent intervals, the operator shall record the position every 24 hours.

6.3.  If a position cannot be recorded in accordance with 6.1 and 6.2, the operator shall immediately notify the appropriate air traffic services unit. This notification shall include the last recorded position. The appropriate air traffic services unit shall be notified immediately when tracking of the balloon is re-established.

6.4.  One hour before the beginning of planned descent of a heavy unmanned free balloon, the operator shall forward to the appropriate ATS unit the following information regarding the balloon:

(a)  the current geographical position;

(b)  the current level (pressure-altitude);

(c)  the forecast time of penetration of 18000 m (60000 ft) pressure-altitude, if applicable;

(d)  the forecast time and location of ground impact.

6.5.  The operator of a heavy or medium unmanned free balloon shall notify the appropriate air traffic services unit when the operation is ended.