Part 1
, will provide a safe
relationship between the performance of the aeroplane and the
aerodromes and routes on which it is capable of being
operated. Performance data shall be determined and scheduled
for the following stages for the ranges of mass, altitude or
pressure-altitude, wind velocity, gradient of the take-off and
landing surface for landplanes; water surface conditions,
density of water and strength of current for seaplanes; and for
any other operational variables for which the aeroplane is to be
certificated.