91.502 Definitions.§ 91.502 Definitions.
The definitions in subpart A of this part apply to this subpart. The following definitions also apply to this subpart.
Configuration means any subclassification of an engine family which can be described on the basis of gross power, emission control system, governed speed, injector size, engine calibration, and other parameters as designated by the Administrator.
Test sample means the collection of engines selected from the population of an engine family for emission testing.