Commonwealth Consolidated Regulations Commonwealth Consolidated Regulations"A part" is unapproved if:
(a) the part is counterfeit; or
(b) the part has not been approved in a manner mentioned in paragraph 21.305(a), (b), (c) or (e) or regulation 21.305A; or
(c) the part:
(i) is not a standard part; and
(ii) has been produced other than under an authorisation (however described) granted by CASA or an national aviation authority; or
(d) maintenance has been carried out on the part other than in accordance with an authorisation (however described) granted by CASA or an national aviation authority; or
(e) the part has been modified other than in accordance with a design for which there is a Part 21 approval; or
(f) the part:
(i) is unserviceable or unsalvageable; and
(ii) has been fraudulently represented as serviceable; or
(g) the part is accompanied by a fraudulent document.