ED Decision 2003/16/RM
(a) The performance prescribed in this subpart must be determined:
(1) With normal piloting skill; and
(2) Without exceptionally favourable conditions.
(b) Compliance with the performance requirements of this subpart must be shown:
(1) For still air at sea-level with a standard atmosphere; and
(2) For the approved range of atmospheric variables.
(c) The available power must correspond to engine power, not exceeding the approved power, less:
(1) Installation losses; and
(2) The power absorbed by the accessories and services at the values for which certification is requested and approved.
(d) For reciprocating engine-powered rotorcraft, the performance, as affected by engine power, must be based on a relative humidity of 80% in a standard atmosphere.
(e) For turbine engine-powered rotorcraft, the performance, as affected by engine power, must be based on a relative humidity of:
(1) 80%, at and below standard temperature; and
(2) 34%, at and above standard temperature plus 28°C (50°F).
Between these two temperatures, the relative humidity must vary linearly.
(f) For turbine-engine-powered rotorcraft, a means must be provided to permit the pilot to determine prior to take-off that each engine is capable of developing the power necessary to achieve the applicable rotorcraft performance prescribed in this subpart.
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