Notwithstanding the first subparagraph, the manufacturer may, in agreement with the approval authority, select an engine which, although not representative of the engine type or, where applicable, of the parent engine of the engine family to be approved, combines a number of the most unfavourable features with regard to the required level of performance.
In ainneoin na chéad fhomhíre, féadfaidh an monaróir, le comhaontú an údaráis ceadaithe, inneall a roghnú ina gcomhcheanglaítear roinnt de na gnéithe is míbhuntáistí i ndáil leis an leibhéal feidhmíochta is gá, cé nach inneall ionadaíoch é do chineál an innill ná, i gcás inarb infheidhme, do mháthair-inneall na haicme innill atá le ceadú.