(2) Šteje se, da je spričevalo o plovnosti neveljavno, če se slovenski zrakoplov ali njegova oprema ne vzdržuje po predpisih, če se na zrakoplovu ali njegovi opremi naredijo spremembe, ki so pomembne za plovnost in ki jih Uprava ni predhodno potrdila, ali če niso narejene obvezne spremembe na zrakoplovu ali njegovi opremi, ali če se ne opravijo preverjanja po zahtevah Uprave, oziroma, če se ne opravi redni ali izredni pregled.
(2) It shall be considered that an airworthiness certificate is invalid if a Slovene aircraft or its equipment is not maintained according to regulations, if changes are made to an aircraft or its equipment which are relevant to airworthiness and the Administration has not previously confirmed, if compulsory changes have not been made to an aircraft or its equipment, or if checks have not been performed on the demand of the Administration or if a regular or occasional inspection is not carried out.