28.6 For the purposes of this Article only, an Event will be deemed to comprise P3, the qualifying practice session and the race.
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c) After consultation with the relevant team the FIA will attach seals to each gearbox in order to ensure that no moving parts, other than those specifically permitted under
d) At each Event seals may be broken once, under supervision and at any time prior to the second day of practice, for the sole purpose of changing gear ratios and dog rings (excluding final drives or reduction gears). Competitors must inform the FIA technical delegate which ratios they intend to fit no later than two hours after the end of P2. However, one additional change of ratios and dog rings will be permitted if a gearbox change is necessary on the first day of practice before the end of P2.