ED Decision 2009/005/R
The pilot must be provided with an indication that any applicable limitations for tethered flight are being, or have been reached. (See AMC 31HB.67)
ED Decision 2009/005/R
The inclusion of an appropriate device or instrument (rated “weak link”, hand held anemometer, windsock etc.) to provide the pilot with an attention-getting indication of the balloon’s tethering limitation, is considered compliant with CS 31HB.67.