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4.2 Aircraft Maximum Mass Limits


4.2.1 The following sporting maximum take-off masses and limitations shall be enforced:

a. Open Class – 750 kg, except that two-seater motor-gliders that exceed 750 kg may be flown at their actual mass but may not carry disposable ballast and may not exceed 850 kg.

b. 18 M Class – 600 kg.

c. 15 M and Standard Classes – 525 kg.

d. Club Class – no water ballast permitted.

e. World Class – 300 kg.

f. Organisers may impose additional restrictions to the above maximum take-off masses to take into account any operational factors such as obstacles, airfield limits, runway and tow plane limitations, and prevailing weather.


The certificated maximum mass may not be exceeded under any circumstances.


4.2.2 Checking take-off mass shall normally be completed before the sailplanes reach the grid. Adding mass beyond the weighing point is prohibited.


The procedures for establishing the mass of the World Class glider are set out in Appendix 1 to this Annex. The Local Procedures shall give details of the procedures for checking the mass for all Classes.

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