Where a type of system has been modified at the subsequent stage of completion of the vehicle, to the extent that the system has to be retested for type-approval purposes, that retesting shall be limited to only those parts of the system that have been modified or affected by the changes.
I gcás inar modhnaíodh cineál córais ag an gcéim críochnaithe ina dhiaidh sin den fheithicil, sa mhéid gur gá ath-thástáil a dhéanamh ar an gcóras chun críocha cineálcheadaithe, beidh an ath-thástáil sin teoranta do na páirteanna sin den chóras a ndearnadh modhnú orthu nó difear dóibh de thoradh na n-athruithe.